Deposits (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Maturities of certificates and other time deposits $100,000 or more
Three months or less	$ 84,539	$ 84,539		$ 83,584
Over three through six months	79,455	79,455		86,893
Over six through twelve months	166,574	166,574		95,389
Over one through two years	92,618	92,618		112,316
Over two through three years	76,633	76,633		43,191
Over three through four years	27,990	27,990		74,745
Over four through five years	8,653	8,653		9,158
Total	536,462	536,462		505,276
Time deposits disclosures
Interest expense on certificates of deposits and other time deposits of $100,000 or more	1,400	2,700	$ 2,800
Brokered time deposits	$ 4,300	$ 4,300		$ 5,700