CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Accounts receivable, allowance for doubtful accounts	$ 841,000	$ 392,000
Common stock, authorized	100,000,000	100,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, issued	34,043,000	33,513,000
Common stock, outstanding	34,043,000	33,513,000