Summary of Significant Accounting Policies (Details 3) (USD $)	3 Months Ended		6 Months Ended					6 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Jun. 30, 2011 BuyEfficient, LLC	Jan. 31, 2011 BuyEfficient, LLC	Jun. 30, 2011 Investment in unconsolidated joint ventures Level 3	Jun. 30, 2011 Level 3	Jun. 30, 2010 Level 3	Jun. 30, 2011 Level 3	Jun. 30, 2010 Level 3	Jun. 30, 2011 Level 3 Non recurring
Goodwill
Balance at the beginning of the period			$ 4,673,000										$ 4,673,000
Purchase of outside 50% equity interest in BuyEfficient													8,415,000
Balance at the end of the period	13,088,000		13,088,000										13,088,000
Ownership interest acquired (as a percent)						50.00%	50.00%
Gains:
Gains	0		69,230,000					69,230,000
Impairment charges:
Other real estate, net		(1,943,000)		(1,943,000)						(1,943,000)		(1,943,000)
Other real estate of discontinued operations, net	(1,495,000)		(1,495,000)						(1,495,000)		(1,495,000)
Total impairment charges		(1,943,000)	(1,495,000)	(1,943,000)					(1,495,000)	(1,943,000)	(1,495,000)
Total Level 3 measurement charges included in earnings									(1,495,000)	(1,943,000)	67,735,000	(1,943,000)
Accounts Receivable
Allowance for doubtful accounts	$ 100,000		$ 100,000		$ 100,000