Goodwill (Details) (USD $)	3 Months Ended								12 Months Ended					6 Months Ended	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Mortgage Banking Activities	Dec. 31, 2012 Mortgage Banking Activities	Jun. 30, 2011 Sidus	Dec. 31, 2011 Sidus	Dec. 31, 2012 Sidus
Goodwill [Line Items]
Net losses	$ 23,899,000	$ (757,000)	$ (10,997,000)	$ (3,471,000)	$ (2,925,000)	$ (3,679,000)	$ 20,213,000	$ 786,000	$ 8,674,000	$ 14,395,000	$ 12,000			$ 2,600,000
Goodwill, Impairment Test, Discount Rate														25.00%
Goodwill, Impairment Test, Weighted-average Multiple of Long-term Book Value														0.84
Goodwill, Impairment Test, Weighted-average Multiple of Long-term Tangible Book Value														1.06
Goodwill [Roll Forward]
Goodwill, beginning of period				0				4,943,872	0	4,943,872		0	0	4,943,872	4,943,872	0
Goodwill acquired during the year										0		0			0
Impairment of goodwill							(4,900,000)		0	(4,943,872)	0	0			(4,943,872)
Goodwill, end of period	0				0				0	0	4,943,872	0	0		0	0
Accumulated impairment losses	$ (66,509,640,000)				$ (66,509,640)				$ (66,509,640,000)	$ (66,509,640)		$ (61,565,768)	$ (61,565,768,000)		$ (4,943,872)	$ (61,565,768,000)