Mortgage Servicing Assets (Details 2) (Residential mortgage loans, USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Residential mortgage loans
Changes in mortgage servicing assets
Balance at the beginning of the period	$ 4,844,000	$ 4,645,000
Additions	201,000	363,000
Amortization	(286,000)	(480,000)
Sales	0	0
Carrying value before valuation allowance at end of year	4,759,000	4,528,000
Changes in valuation allowance
Balance at the beginning of the period	0	0
Impairment (charges) recoveries	0	0
Balance at the end of the period	0	0
Net carrying value of mortgage servicing assets at end of period	4,759,000	4,528,000
Fair value of mortgage servicing assets at end of period	7,868,000	6,137,000
Fair value of mortgage servicing assets exceeding the carrying value	3,110,000	1,610,000
Mortgage loan contractual servicing fees, including late fees and ancillary income	$ 790,000	$ 820,000