Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Current Assets:
Allowance on accounts receivable	$ 200,000	$ 200,000
Stockholders' Equity
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	59,704,086	62,621,268
Common stock, shares outstanding	59,704,086	62,621,268
Treasury stock, shares	5,013,450	2,091,600