Covered Assets and Indemnification Asset - Covered Loans Summary (Details) - USD ($) $ in Thousands	Sep. 13, 2013	Mar. 31, 2017	Dec. 31, 2016
Covered Loans
Allowance for covered loans		$ (753)	$ (413)
Total covered loans, net of allowance		234,681	255,714
Covered
Covered Loans
Total covered loans		235,434	256,127
Allowance for covered loans		(753)	(413)
Total covered loans, net of allowance		234,681	255,714
Covered | Commercial and industrial
Covered Loans
Total covered loans		2,022	2,697
Covered | Real estate
Covered Loans
Total covered loans		227,241	244,469
Covered | Construction and land development
Covered Loans
Total covered loans		$ 6,171	$ 8,961
Covered | Acquired loans
Loans
Fair value of loans acquired	$ 1,100,000
Carryover of the allowance for loan losses recorded	$ 0