Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Maturities of certificates and other time deposits $100,000 or more
Three months or less	$ 191,133	$ 83,584
Over three through six months	163,633	86,893
Over six through twelve months	209,954	95,389
Over one through two years	243,614	112,316
Over two through three years	94,238	43,191
Over three through four years	45,055	74,745
Over four through five years	39,956	9,158
Total	987,583	505,276
Time deposits disclosures
Interest expense on certificates of deposits and other time deposits of $100,000 or more	6,700	5,500	$ 6,100
Brokered time deposits	$ 93,600	$ 5,700