Fair Value Measurements (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Fair value measurements
Fair value carrying amount		$ 14,782	$ 13,604
Mortgages held for sale reported at fair value
Fair value measurements
Fair value carrying amount		14,782	13,604
Aggregate unpaid principal		14,455	13,526
Excess of fair value carrying amount over (under) unpaid principal	[1]	$ 327	$ 78

[1] The excess of fair value carrying amount over (under) unpaid principal is included in mortgage banking income and includes changes in fair value at and subsequent to funding and gains and losses on the related loan commitment prior to funding.