VIE Carrying Amounts Included in Financial Statements (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
CDE (NMTC)
Carrying amounts of the VIEs' assets and liabilities
Loans receivable	$ 36,077	$ 36,039
Premises and equipment, net	0	0
Accrued interest receivable	116	117
Other assets	616	843
Total assets	36,809	36,999
Other borrowed funds	4,555	4,555
Accrued interest payable	4	4
Other liabilities	185	151
Total liabilities	4,744	4,710
LIHTC
Carrying amounts of the VIEs' assets and liabilities
Loans receivable	0	0
Premises and equipment, net	13,106	13,536
Accrued interest receivable	0	0
Other assets	258	153
Total assets	13,364	13,689
Other borrowed funds	1,690	1,723
Accrued interest payable	5	5
Other liabilities	0	189
Total liabilities	$ 1,695	$ 1,917