Earnings Per Share Earnings Per Share - Reconciliation (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator:
Net income (loss) from continuing operations	$ (13,491)	$ (4,264)	$ (16,689)	$ (13,863)
Net income (loss) from discontinued operations	(113)	(249)	(416)	(454)
Net income (loss)	$ (13,604)	$ (4,513)	$ (17,105)	$ (14,317)
Basic and diluted income (loss) per common share:
Basic and diluted income (loss) from continuing operations (usd per share)	$ (0.48)	$ (0.20)	$ (0.70)	$ (0.65)
Basic and diluted loss from discontinued operations (usd per share)	0.00	(0.01)	(0.02)	(0.02)
Basic and diluted income (loss) per share available to common shareholders (usd per share)	$ (0.48)	$ (0.21)	$ (0.72)	$ (0.67)
Denominator:
Basic and Diluted (shares)	28,084,254	21,361,930	23,827,030	21,352,086