Deposits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Maturities of certificates and other time deposits $100,000 or more
Three months or less	$ 171,716		$ 171,716		$ 191,133
Over three through six months	89,887		89,887		163,633
Over six through twelve months	426,736		426,736		209,954
Over one through two years	201,449		201,449		243,614
Over two through three years	94,177		94,177		94,238
Over three through four years	82,689		82,689		45,055
Over four through five years	8,958		8,958		39,956
Total	1,075,612		1,075,612		987,583
Time deposits disclosures
Interest expense on certificates of deposits and other time deposits of $100,000 or more	3,000	$ 1,400	5,800	$ 2,700
Brokered time deposits	$ 129,800		$ 129,800		$ 93,600