Fair Values of Assets and Liabilities (Measured on Nonrecurring Basis) (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Continuing operations [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 0	$ 0
Continuing operations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	6,974,000	4,529,000
Continuing operations [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Continuing operations [Member] | Nonrecurring [Member] | Total [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, net	13,575,000	31,266,000
Other real estate owned	48,480,000	84,794,000
Loans held for sale		4,529,000
Purchased impaired loans		308,594,000
Contractual loans		65,283,000
Total assets at fair value	62,055,000	494,466,000
Continuing operations [Member] | Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, net	0	0
Other real estate owned	0	0
Loans held for sale		0
Purchased impaired loans		0
Contractual loans		0
Total assets at fair value	0	0
Continuing operations [Member] | Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, net	0	0
Other real estate owned	0	0
Loans held for sale		4,529,000
Purchased impaired loans		0
Contractual loans		0
Total assets at fair value	0	4,529,000
Continuing operations [Member] | Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, net	13,575,000	31,266,000
Other real estate owned	48,480,000	84,794,000
Loans held for sale		0
Purchased impaired loans		308,594,000
Contractual loans		65,283,000
Total assets at fair value	62,055,000	489,937,000
Discontinued operations [Member] | Nonrecurring [Member] | Total [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale		233,000
Total assets at fair value	0	233,000
Total liabilities at fair value	0
Discontinued operations [Member] | Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale		0
Total assets at fair value		0
Discontinued operations [Member] | Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale		233,000
Total assets at fair value		233,000
Discontinued operations [Member] | Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale		0
Total assets at fair value		$ 0