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, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating expenses:
Depreciation and amortization									$ 5,559	$ 5,922	$ 5,982
Business reorganization expenses									3,789	5,440	7,506
Operating income (loss)	(6,134)	(5,113)	(2,865)	(3,374)	(6,447)	(6,125)	(5,941)	(8,639)	(17,486)	(27,152)	(10,094)
Other income (expense):
Interest income (expense), net									(661)	(554)	(561)
Other income (expense), net									202	759	324
Provision for (benefit from) income taxes from continuing operations									(2,159)	3,264	(3,109)
Net income (loss)	2,743	(7,019)	(4,374)	(4,544)	(11,295)	(5,047)	(5,811)	(8,242)	(13,194)	(30,395)	(5,335)
Parent Company
Operating expenses:
Selling, general and administrative expenses									16,948	15,953	18,272
Depreciation and amortization									541	645	641
Business reorganization expenses									967	790	359
Operating income (loss)									(18,456)	(17,388)	(19,272)
Other income (expense):
Interest income (expense), net									103	105	43
Other income (expense), net									8,150	9,412	15,016
Income (Loss) from Subsidiaries, Net of Tax									(2,995)	(22,522)	(1,103)
Income (loss) from continuing operations before provision for income taxes									(10,203)	(7,871)	(4,213)
Provision for (benefit from) income taxes from continuing operations									(4)	2	19
Net income (loss)									$ (13,194)	$ (30,395)	$ (5,335)