Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Nov. 14, 2011 Series A Preferred Stock [Member]
Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Details) [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance (in Shares)	16,037,000	16,039,000
Preferred Stock, Value, Issued				$ 8,300,000
Convertible Preferred Stock, Shares Issued upon Conversion (in Shares)				20,825,000
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings (in Shares)			50,000
Share-based Compensation	3,000	24,000
Defined Benefit Plan, Accumulated Other Comprehensive Income Minimum Pension Liability, after Tax	4,877,000	4,368,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ 998,000	$ 901,000