SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT [Schedule] Condensed Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating expenses:
Depreciation and amortization									$ 3,090	$ 3,845	$ 5,559
Business reorganization									1,580	5,828	3,789
Operating income (loss)	$ (671)	$ (786)	$ (2,425)	$ (3,705)	$ 140	$ (3,826)	$ 13,643	$ (6,716)	(7,587)	3,241	(17,486)
Other income (expense):
Interest income (expense), net									(357)	(722)	(661)
Other income (expense), net									(247)	(266)	202
Provision for (benefit from) income taxes from continuing operations									742	646	(2,159)
Net income (loss)	$ (292)	$ (1,873)	$ (3,138)	$ (3,487)	$ (2,626)	$ (2,084)	$ 13,877	$ (6,838)	(8,790)	2,329	(13,194)
Parent Company
Operating expenses:
Selling, general and administrative expenses									10,451	13,327	16,948
Depreciation and amortization									405	488	541
Business reorganization									(16)	1,168	967
Operating income (loss)									(10,840)	(14,983)	(18,456)
Other income (expense):
Interest income (expense), net									197	516	103
Other income (expense), net									4,195	5,318	8,150
Income (Loss) from Subsidiaries, Net of Tax									(2,351)	11,466	(2,995)
Income (loss) from continuing operations before provision for income taxes									(6,448)	(9,149)	(10,203)
Provision for (benefit from) income taxes from continuing operations									(9)	(12)	(4)
Net income (loss)									$ (8,790)	$ 2,329	$ (13,194)