Consolidated Statement of Stockholders' Equity (USD $)	Convertible redeemable preferred stock	Common stock	Additional paid-in-capital	Accumulated deficit	Treasury Stock	Total
Stockholders' Equity at Dec. 31, 2011
Stock Issued During the Period, Value, Stock Options Excercised			$ 66,000
Cash dividends: preferred stock			(300,000)
Stock based compensation expense			242,000
Comprehensive income (loss)				(319,000)
Stockholders' Equity at Dec. 31, 2012	8,000	36,000	31,056,000	(25,743,000)	(208,000)
Stockholders' Equity at Dec. 31, 2011
Cash dividends: preferred stock			(150,000)
Stock based compensation expense			76,000
Comprehensive income (loss)				(1,999,000)
Stockholders' Equity at Jun. 30, 2013	$ 8,000	$ 36,000	$ 30,982,000	$ (27,742,000)	$ (208,000)