Condensed Consolidated Statement of Changes in Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2012	$ 44,027,000	$ 122,000	$ 103,135,000	$ (56,102,000)	$ 53,000	$ (3,181,000)
Balance (in shares) at Dec. 31, 2012		12,678,000
Net loss for the six months ended June 30, 2013	(4,329,000)	0	0	(4,329,000)	0	0
Unrealized loss on investments	(98,000)	0	0	0	(98,000)	0
Foreign currency translation adjustment	(86,000)	0	0	0	(86,000)	0
Shares issued pursuant to exercise of stock options	33,000	0	33,000	0	0	0
Shares issued pursuant to exercise of stock options (in shares)		8,000
Issuance of restricted stock	0	0	0	0	0	0
Issuance of restricted stock (in shares)		93,000
Shares withheld pursuant to exercise of stock options and restricted stock	(202,000)	0	0	0	0	(202,000)
Stock based compensation - restricted stock	273,000	0	273,000	0	0	0
Stock based compensation - options and performance shares	331,000	0	331,000	0	0	0
Balance at Jun. 30, 2013	$ 39,949,000	$ 122,000	$ 103,772,000	$ (60,431,000)	$ (131,000)	$ (3,383,000)
Balance (in shares) at Jun. 30, 2013		12,779,000