Condensed Consolidated Statements of Shareholders' Equity - Unaudited - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income	Treasury Stock	Noncontrolling Interest
Beginning balance, shares at Dec. 31, 2014		23,083
Beginning balance at Dec. 31, 2014	$ 511,545	$ 23	$ 491,662	$ (69,508)	$ 4,717	$ (1,413)	$ 86,064
Beginning balance, treasury stock, shares at Dec. 31, 2014						78
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	1,115		845				270
Withholding taxes paid on vested restricted stock units at UCP, Inc.	(21)		(12)				(9)
Net loss	(19,809)			(16,825)			(2,984)
Unrealized appreciation on investments, net of deferred income tax and reclassification adjustments	(51)				(51)
Foreign currency translation	9				9
Ending balance, shares at Mar. 31, 2015		23,083
Ending balance at Mar. 31, 2015	$ 492,788	$ 23	492,495	(86,333)	4,675	$ (1,413)	83,341
Ending balance, treasury stock, shares at Mar. 31, 2015						78
Beginning balance, shares at Dec. 31, 2015	23,116	23,116
Beginning balance at Dec. 31, 2015	$ 434,004	$ 23	494,207	(151,366)	4,961	$ (1,413)	87,592
Beginning balance, treasury stock, shares at Dec. 31, 2015	78					78
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 506		455				51
Withholding taxes paid on vested restricted stock units at UCP, Inc.	(45)		(25)				(20)
Net loss	(6,842)			(6,801)			(41)
Unrealized appreciation on investments, net of deferred income tax and reclassification adjustments	40				40
Foreign currency translation	$ 9				9
Ending balance, shares at Mar. 31, 2016	23,116	23,116
Ending balance at Mar. 31, 2016	$ 427,672	$ 23	$ 494,637	$ (158,167)	$ 5,010	$ (1,413)	$ 87,582
Ending balance, treasury stock, shares at Mar. 31, 2016	78					78