Convertible Debenture, due to Majority Stockholder (Details) - USD ($) $ in Thousands |
12 Months Ended | |||||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Related Party Transaction [Line Items] | ||||||
| Balance as of January 1, 2016 | $ 0 | $ 40,030 | ||||
| Conversion of convertible debenture to common shares | (30,030) | |||||
| Pay-off of remaining principal balance | $ 0 | 41,321 | $ 7,378 | |||
| Balance as of December 31, 2016 | 0 | $ 40,030 | ||||
| Two Thousand Sixteen March Two [Member] | ||||||
| Related Party Transaction [Line Items] | ||||||
| Conversion of convertible debenture to common shares | [1] | (15,000) | ||||
| Two Thousand Sixteen July One [Member] | ||||||
| Related Party Transaction [Line Items] | ||||||
| Conversion of convertible debenture to common shares | [1] | $ (15,030) | ||||
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- Definition Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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