INVESTMENT IN AMAK (Held-for-Sale) - Additional Information (Details) $ in Millions |
3 Months Ended | ||||||||
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Jun. 30, 2019
shares
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Mar. 31, 2019
USD ($)
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Mar. 31, 2018
shares
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Sep. 30, 2019
USD ($)
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Jun. 29, 2019 |
Dec. 31, 2018
USD ($)
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Sep. 30, 2018 |
Mar. 30, 2018 |
Jun. 30, 1986
ر.س / $
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| Treasury Stock | |||||||||
| Schedule of Equity Method Investments [Line Items] | |||||||||
| Number of stock exchanged (in shares) | 65,000 | ||||||||
| AMAK | |||||||||
| Schedule of Equity Method Investments [Line Items] | |||||||||
| Percentage of ownership | 33.29% | 33.40% | 33.41% | ||||||
| Investment in equity method investment | $ | $ 34.1 | $ 38.7 | |||||||
| Exchange rate | ر.س / $ | 3.75 | ||||||||
| Number of stock exchanged (in shares) | 24,489 | ||||||||
| Proceeds from AMAK share repurchase | $ | $ 0.4 | ||||||||
| Chief Executive Officer | AMAK | |||||||||
| Schedule of Equity Method Investments [Line Items] | |||||||||
| Percentage of ownership | 33.30% | 33.41% | 33.40% | 33.40% | 33.44% | ||||
| Shares of equity transferred to related party (in shares) | 100,000 | ||||||||
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- Definition Number of previously issued common stock exchanged with stock acquired with cost method investment. No definition available.
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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