Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Current Assets:
Allowance for doubtful accounts	$ 1,766	$ 1,126
Current Liabilities:
Unamortize Discount, convertible debt	$ 0	$ 56
Stockholders' Equity:
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	38,525,004	36,057,791
Common stock, shares outstanding	38,484,495	36,017,282
Treasury stock, shares	40,509	40,509