Basis of Presentation and Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Loss per Share (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Loss from continuing operations	$ (4,522)	$ (1,977)
Loss from discontinued operations	0	(12)
Net loss	$ (4,522)	$ (1,989)
Denominator:
Basic weighted average common shares outstanding (in shares)	11,718	11,650
Potential common shares from equity awards and warrants (in shares)	0	0
Diluted weighted average shares (in shares)	11,718	11,650