Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Accumulated depreciation for operating lease	$ 229,347	$ 228,708
Allowances for operating lease receivable	459	477
Accumulated depreciation for property, equipment & furnishings	5,485	4,957
Discount of notes payable	1,961	2,085
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	3,475,000	3,475,000
Preferred stock, shares outstanding	3,475,000	3,475,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	9,206,542	9,109,663
Common stock, shares outstanding	9,206,542	9,109,663
Accumulated other comprehensive loss, income tax benefit	$ 5,195	$ 5,249