Other Long-Term Liabilites (Narrative) (Details) - USD ($) $ in Thousands  | 
Sep. 30, 2016  | 
Dec. 31, 2015  | 
|---|---|---|
| Liabilities, Other than Long-term Debt, Noncurrent | ||
| Other long-term liabilities | $ 388 | $ 1,812 | 
| Defined benefit pension plan liability | 273 | 1,689 | 
| Insurance settlements receivable | $ 273 | $ 1,689 | 
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- Definition This represents the noncurrent liability recognized in the balance sheet that is associated with the defined benefit pension plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) of amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- References No definition available. 
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- Definition The aggregate carrying amount, as of the balance sheet date, of liabilities not separately disclosed in the balance sheet. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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