CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data	Sep. 30, 2011	Dec. 31, 2010
Accounts receivable, allowance for doubtful accounts	$ 1,754	$ 1,883
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000	20,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	120,000	120,000
Common stock, shares outstanding	52,483	52,017
Treasury stock, shares	221	115
Long Term Debt Current
Term loan, discount	118	116
Long Term Debt Noncurrent
Term loan, discount	$ 237	$ 328