Income Taxes - Summary of Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Allowance for loan losses	$ 9,477	$ 7,759
Premises and equipment	2,334	898
Other real estate owned	841	1,737
Accrued stock compensation	1,561	1,235
Federal tax loss carryforward	28,089	33,507
State tax loss carryforward	6,123	6,593
Alternative minimum tax carryforward	4,261	3,355
Net unrealized securities losses	4,616	3,906
Deferred compensation	3,279	1,829
Accrued interest and fee income	3,267	2,404
Other	3,748	3,185
Gross deferred tax assets	67,596	66,408
Less: Valuation allowance	0	0
Deferred tax assets net of valuation allowance	67,596	66,408
Deposit base intangible	(3,953)	(3,452)
Other	(2,825)	(2,682)
Gross deferred tax liabilities	(6,778)	(6,134)
Net deferred tax assets	$ 60,818	$ 60,274