SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT [Schedule] Condensed Statement of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating expenses:
Depreciation and amortization									$ 6,438	$ 6,251	$ 8,184
Business reorganization expenses									7,782	720	1,694
Operating income (loss)	1,831	(1,600)	(3,167)	(3,702)	4,792	6,150	6,030	463	(6,638)	17,435	(5,618)
Other income (expense):
Interest income (expense), net									(635)	(1,143)	(1,278)
Other income (expense), net									254	(44)	4,500
Fee for early extinguishment of credit facility									0	0	(563)
Income (loss) from continuing operations before provision for income taxes									(7,019)	16,248	(2,959)
Provision for (benefit from) income taxes									(1,684)	5,339	1,482
Income (loss) from continuing operations									(5,335)	10,909	(4,441)
Income (loss) from discontinued operations, net of income taxes									0	0	(244)
Net income (loss)	(343)	(2,165)	394	(3,221)	3,309	3,382	4,224	(6)	(5,335)	10,909	(4,685)
Parent Company
Operating expenses:
Selling, general and administrative expenses									18,272	19,860	18,848
Depreciation and amortization									641	595	152
Business reorganization expenses									359	0	0
Operating income (loss)									(19,272)	(20,455)	(19,000)
Other income (expense):
Interest income (expense), net									43	28	3,084
Other income (expense), net									15,016	17,770	14,293
Equity in earnings (losses) of subsidiaries, net of income taxes									(1,103)	13,557	(1,833)
Fee for early extinguishment of credit facility									0	0	(563)
Income (loss) from continuing operations before provision for income taxes									(5,316)	10,900	(4,019)
Provision for (benefit from) income taxes									19	(9)	422
Income (loss) from continuing operations									(5,335)	10,909	(4,441)
Income (loss) from discontinued operations, net of income taxes									0	0	(244)
Net income (loss)									$ (5,335)	$ 10,909	$ (4,685)