Annual report pursuant to Section 13 and 15(d)

ACQUISITION OF TRECORA CHEMICAL, INC. (formerly SSI Chusei, Inc.) (Details)

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ACQUISITION OF TRECORA CHEMICAL, INC. (formerly SSI Chusei, Inc.) (Details) (USD $)
3 Months Ended 12 Months Ended 0 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Oct. 01, 2014
Oct. 02, 2014
Business Acquisition [Line Items]                          
Sales $ 74,073,000us-gaap_SalesRevenueNet $ 76,917,000us-gaap_SalesRevenueNet $ 74,553,000us-gaap_SalesRevenueNet $ 64,100,000us-gaap_SalesRevenueNet $ 66,637,000us-gaap_SalesRevenueNet $ 60,870,000us-gaap_SalesRevenueNet $ 55,975,000us-gaap_SalesRevenueNet $ 52,745,000us-gaap_SalesRevenueNet $ 289,643,000us-gaap_SalesRevenueNet $ 236,227,000us-gaap_SalesRevenueNet $ 222,858,000us-gaap_SalesRevenueNet    
Operating income                 25,482,000us-gaap_OperatingIncomeLoss 19,970,000us-gaap_OperatingIncomeLoss 17,456,000us-gaap_OperatingIncomeLoss    
Purchase price allocation [Abstract]                          
Goodwill 21,750,000us-gaap_Goodwill       0us-gaap_Goodwill       21,750,000us-gaap_Goodwill 0us-gaap_Goodwill      
Trecora Chemical Inc (Formerly SSI Chusei, Inc) [Member]                          
Business Acquisition [Line Items]                          
Existing cash balance                       4,702,000trec_BusinessCombinationConsiderationTransferredExistingCashBalance
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
 
Sales                 5,300,000us-gaap_SalesRevenueNet
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
       
Operating income                 (1,100,000)us-gaap_OperatingIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
       
Acquisition cost related general and administrative expense                 1,000,000us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
       
Consideration Paid [Abstract]                          
Cash paid at closing                       2,902,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
 
Cash paid for working capital adjustment                       1,916,000trec_BusinessCombinationConsiderationTransferredWorkingCapitalAdjustment
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
 
Debt                       70,000,000us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
 
Total purchase consideration                       74,818,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
 
Purchase price allocation [Abstract]                          
Purchase Price                         74,818,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Cash                         107,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Trade receivables                         2,821,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Inventories                         3,339,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Prepaid expenses and other assets                         743,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Plant, pipeline and equipment                         23,973,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Other intangible assets 26,706,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
              26,706,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
      26,706,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Accounts payable                         (1,074,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Accrued liabilities                         (1,121,000)trec_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedLiabilities
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Other liabilities                         (1,759,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Long-term debt, net of current portion                         (667,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Net assets and liabilities (Excluding goodwill)                         53,068,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Goodwill                         21,750,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Identifiable intangible assets [Abstract]                          
Total 26,706,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
              26,706,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
      26,706,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
Weighted average amortization period                       12 years 6 months  
Unaudited pro forma information [Abstract]                          
Sales                 308,966,000us-gaap_BusinessAcquisitionsProFormaRevenue
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
259,348,000us-gaap_BusinessAcquisitionsProFormaRevenue
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
     
Net Income                 16,623,000us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
20,223,000us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
     
Trecora Chemical Inc (Formerly SSI Chusei, Inc) [Member] | Trade Name [Member]                          
Identifiable intangible assets [Abstract]                          
Indefinite-lived Intangible Assets Acquired                       2,158,000us-gaap_IndefinitelivedIntangibleAssetsAcquired
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
 
Trecora Chemical Inc (Formerly SSI Chusei, Inc) [Member] | Customer Relationships [Member]                          
Identifiable intangible assets [Abstract]                          
Finite-lived Intangible Assets Acquired                       16,852,000us-gaap_FinitelivedIntangibleAssetsAcquired1
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
 
Weighted average amortization period                       15 years  
Trecora Chemical Inc (Formerly SSI Chusei, Inc) [Member] | Non-compete Agreements [Member]                          
Identifiable intangible assets [Abstract]                          
Finite-lived Intangible Assets Acquired                       94,000us-gaap_FinitelivedIntangibleAssetsAcquired1
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_NoncompeteAgreementsMember
 
Weighted average amortization period                       5 years  
Trecora Chemical Inc (Formerly SSI Chusei, Inc) [Member] | Licenses and Permits [Member]                          
Identifiable intangible assets [Abstract]                          
Finite-lived Intangible Assets Acquired                       1,471,000us-gaap_FinitelivedIntangibleAssetsAcquired1
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember
 
Trecora Chemical Inc (Formerly SSI Chusei, Inc) [Member] | Developed Technology [Member]                          
Identifiable intangible assets [Abstract]                          
Finite-lived Intangible Assets Acquired                       $ 6,131,000us-gaap_FinitelivedIntangibleAssetsAcquired1
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
 
Weighted average amortization period                       10 years  
Trecora Chemical Inc (Formerly SSI Chusei, Inc) [Member] | Common Class A [Member]                          
Business Acquisition [Line Items]                          
Percentage of common Stock acquired (in hundredths)                         100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= trec_TrecoraChemicalIncMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember