Noncovered Loans Receivable (Related Party) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance outstanding at beginning of period	$ 7,474,000	$ 11,442,000	$ 10,391,000
Principal additions	23,000	0	8,906,000
Principal reductions	(191,000)	(923,000)	(7,855,000)
Elimination of outstanding loan balance due to change in related party status		(3,045,000)
Additional of outstanding loan balance due to change in related party status	1,858,000
Balance outstanding at end of period	9,164,000	7,474,000	11,442,000
Unfunded commitments	228,000	184,000
Borrowings from related parties	$ 0	$ 0