Condensed Consolidated Statement of Stockholders' Equity Condensed Consolidated Statement of Stockholders' Equity - 6 months ended Jun. 30, 2015 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]
Balance at the beginning of the period at Dec. 31, 2014	$ 9,773	$ 1	$ 98,133	$ 469	$ (88,830)
Balance at the beginning of the period (shares) at Dec. 31, 2014		9,424
Issuance of common stock under employee stock option and stock purchase plans	83		83
Issuance of common stock under employee stock option and stock purchase plans (shares)		19
Stock-based compensation	284		284
Issuance of common stock upon the exercise of warrants	2,503		2,503
Issuance of common stock upon the exercise of warrants (shares)		583
Foreign currency translation adjustment	(9)			(9)
Net income (loss)	3,240				3,240
Balance at the end of the period at Jun. 30, 2015	$ 15,874	$ 1	$ 101,003	$ 460	$ (85,590)
Balance at the end of the period (shares) at Jun. 30, 2015		10,026