Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Accounts receivable, allowance	$ 76,000	$ 66,000
Long-term debt, unamortized discount	$ 88,000	$ 0
Common stock, par value	$ 0.02	$ 0.02
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	19,513,132	19,391,319
Common stock, shares outstanding	19,513,132	19,391,319