Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Allowance for accounts receivable	$ 127	$ 102
Accumulated depreciation	$ 1,721	$ 1,648
Shareholders' equity:
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	38,538,640	32,100,882
Common stock, shares outstanding	38,538,640	32,100,882