Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current
Various reserves	$ 199	$ 369
Nondeductible accruals	1,352	1,661
Prepaid expenses	(95)	(96)
Other	43	25
Valuation allowance	(1,410)	(1,951)
Total Current	89	8
Non-current
Credit carryforwards	3,708	4,223
Net operating loss carryforwards	23,808	11,286
Fixed assets	1,299	1,695
Amortization	31,483	35,252
Identifiable intangibles acquired	(2,239)	(2,288)
Equity based compensation	934	978
Other	24	83
Valuation allowance	(59,108)	(51,239)
Total Non-current	$ 91	$ 10