Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts receivable	$ 2,882,000	$ 2,822,000
Property and equipment, variable interest entity restricted	7,298,000	0
Current portion of long-term debt and capitalized lease obligations, variable interest entity nonrecourse	173,000	0
Long-term debt and capitalized lease obligations, variable interest entity nonrecourse	$ 5,067,000	$ 0
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
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares authorized	200,000	200,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	6,061,000	5,976,000
Common stock, shares outstanding	5,829,000	5,744,000
Treasury stock, shares	232,000	232,000