Interim Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
CURRENT ASSETS:
Allowance for doubtful accounts receivable	$ 3,068	$ 2,822
NONCURRENT LIABILITIES:
Redeemable preferred stock, par value	$ 0.10	$ 0.10
Redeemable preferred stock, shares authorized	5,000	5,000
Redeemable preferred stock, shares issued	5,000	5,000
Redeemable preferred stock, shares outstanding	5,000	5,000
SHAREHOLDERS' EQUITY:
Preferred stock, shares authorized	200,000	200,000
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	20,000,000	20,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	6,050,000	5,976,000
Common stock, shares outstanding	5,818,000	5,744,000
Treasury stock, shares	232,000	232,000