Long-Term Debt (Details) - 2012 Note - 8¼% Limited Convertible Senior Subordinated Notes Due 2012 [Member] - USD ($)		9 Months Ended
Feb. 15, 2019	Sep. 30, 2019	Dec. 31, 2018
Long-Term Debt (Details) - 2012 Note [Line Items]
Long-term Debt		$ 352,000	$ 387,000
Debt Instrument, Maturity Date		Mar. 01, 2012
Debt Instrument, Face Amount	$ 35,000
Debt Exchange Each Principal Amount Of Original Debt Exchanged	1,000
Repayment Of Convertible Debt Principal	200
Debt Exchanged Aggregate Payment	$ 7,000
Gain (Loss) on Extinguishment of Debt		$ 52,000
Interest Payable, Current		$ 293,000	$ 298,000

Each principal amount of the original debt being exchanged in cash payment.

No definition available.

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The aggregate payment made in cash in exchange of the debt instrument.

+ References

No definition available.

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- Definition

Exchange of principal of debt for cash.

+ References

No definition available.

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Face (par) amount of debt instrument at time of issuance.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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