Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
CURRENT ASSETS:
Reserve for doubtful accounts receivable	$ 4,281	$ 2,717
Accumulated amortization on intangible assets	$ 2,435	$ 2,245
STOCKHOLDERS' INVESTMENT (DEFICIT):
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	27,767,657	27,756,759
Common stock, shares outstanding	27,767,657	27,756,759
Treasury stock, shares	285,208	285,208