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Stockholders' Equity (Details) (USD $)	12 Months Ended
Stockholders' Equity (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 24, 2010
Changes in the balances of each component of AOCI
Beginning Balance	$ 4,621,000	$ 5,973,000
Other comprehensive income (loss) before reclassifications	55,000	(1,163,000)
Benefit (provision) for income taxes		(128,000)
Amounts reclassified from AOCI	(3,207,000)	(61,000)
Other comprehensive income (loss), net of tax	(3,152,000)	(1,352,000)	(617,000)
Ending Balance	1,469,000	4,621,000	5,973,000
Authorized amount of common stock repurchase (in dollars)				200,000,000
Treasury Stock
Changes in the balances of each component of AOCI
Treasury shares cancelled and retired			5,278,828
Reduction due to retirement of treasury stock			(200,175,000)
Retained Earnings (Accumulated Deficit)
Changes in the balances of each component of AOCI
Reduction due to retirement of treasury stock			200,122,000
Common Stock
Changes in the balances of each component of AOCI
Reduction due to retirement of treasury stock			53,000
Foreign Currency Translation
Changes in the balances of each component of AOCI
Beginning Balance	5,326,000	6,701,000
Other comprehensive income (loss) before reclassifications	149,000	(1,322,000)
Benefit (provision) for income taxes		(53,000)
Amounts reclassified from AOCI	(3,142,000)
Other comprehensive income (loss), net of tax	(2,993,000)	(1,375,000)
Ending Balance	2,333,000	5,326,000
Minimum pension liability
Changes in the balances of each component of AOCI
Beginning Balance	(736,000)	(775,000)
Other comprehensive income (loss) before reclassifications	(145,000)	125,000
Benefit (provision) for income taxes		(86,000)
Other comprehensive income (loss), net of tax	(145,000)	39,000
Ending Balance	(881,000)	(736,000)
Unrealized Gain on AFS Securities
Changes in the balances of each component of AOCI
Beginning Balance	31,000	47,000
Other comprehensive income (loss) before reclassifications	51,000	34,000
Benefit (provision) for income taxes		11,000
Amounts reclassified from AOCI	(65,000)	(61,000)
Other comprehensive income (loss), net of tax	(14,000)	(16,000)
Ending Balance	$ 17,000	$ 31,000