CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning Balance at Dec. 31, 2011	$ 6	$ 271	$ 278,408	$ (235,745)		$ 42,940
Balance (in shares) at Dec. 31, 2011	592
Beginning Balance (Shares) at Dec. 31, 2011		27,117,450
Issuance of common stock		19	3,135			3,154
Issuance of common stock (Shares)		1,800,000
Exercise of options			14			14
Exercise of options (Shares)		27,778
Issuance of options			1,131			1,131
Compensation cost related to stock options			593			593
Comprehensive loss				(1,813)	(7)	(1,820)
Balance at Dec. 31, 2012	6	290	283,281	(237,558)	(7)	46,012
Balance (Shares) at Dec. 31, 2012	592	28,945,228
Exercise of options			10			10
Exercise of options (Shares)		21,500
Issuance of options						0
Compensation cost related to stock options			327			327
Comprehensive loss				(1,390)	(9)	(1,399)
Balance at Jun. 30, 2013	$ 6	$ 290	$ 283,618	$ (238,948)	$ (16)	$ 44,950
Balance (Shares) at Jun. 30, 2013	592	28,966,728