Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES (Details)

v3.7.0.1
COMMITMENTS AND CONTINGENCIES (Details)
SAR in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
SAR
Oct. 24, 2010
USD ($)
Oct. 24, 2010
SAR
Loss Contingencies [Line Items]              
Expenses for environmental monitoring, compliance, and improvements $ 154,000 $ 192,000 $ 301,000 $ 329,000      
Pending Litigation [Member]              
Loss Contingencies [Line Items]              
Accrual recorded value 1,000,000   1,000,000        
Saudi Industrial Development Fund Limited Guarantee [Member]              
Guarantor Obligations [Line Items]              
Principal amount of loan guaranteed           $ 88,000,000 SAR 330,000
Amount of maximum exposure $ 82,700,000   $ 82,700,000   SAR 310,000 $ 36,100,000 SAR 135,330
Saudi Industrial Development Fund Limited Guarantee [Member] | Maximum [Member]              
Guarantor Obligations [Line Items]              
Loan guarantee           41.00% 41.00%