Fair Value Measurements - Schedule of Estimated Fair Value of Other Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair value of financial instruments
Cash and cash equivalents	$ 96,050	$ 67,312	$ 91,565	$ 76,028
Investment securities available for sale	132,981	153,685
Investment securities held to maturity	366,041	346,666
Other investments	11,365	12,461
Loans - net	2,900,812	2,658,519
Accrued interest receivable	12,223	10,362
Derivatives assets	3,283	3,896
Deposits.	3,029,783	2,741,712
Securities sold under agreements to repurchase	27,639	47,459
Short-term borrowings	106,230	132,000
Subordinated notes payable	59,111	59,031
Junior subordinated debentures	72,166	72,166
Carrying Value
Fair value of financial instruments
Cash and cash equivalents	96,050	67,312
Investment securities available for sale	132,981	153,685
Investment securities held to maturity	366,041	346,666
Other investments	11,365	12,461
Loans - net	2,900,812	2,658,519
Accrued interest receivable	12,223	10,362
Derivatives assets	3,283	3,896
Deposits.	3,029,783	2,741,712
Securities sold under agreements to repurchase	27,639	47,459
Short-term borrowings	106,230	132,000
Accrued interest payable	1,038	1,134
Subordinated notes payable	59,111	59,031
Junior subordinated debentures	72,166	72,166
Derivatives liabilities	11,225	9,889
Total Fair Value
Fair value of financial instruments
Cash and cash equivalents	96,050	67,312
Investment securities available for sale	132,981	153,685
Investment securities held to maturity	363,178	345,576
Other investments	11,365	12,461
Loans - net	2,868,091	2,647,448
Accrued interest receivable	12,223	10,362
Derivatives assets	3,283	3,896
Deposits.	3,029,226	2,741,366
Securities sold under agreements to repurchase	26,101	45,474
Short-term borrowings	106,230	132,000
Accrued interest payable	1,038	1,134
Subordinated notes payable	58,681	59,080
Junior subordinated debentures	72,166	72,166
Derivatives liabilities	$ 11,225	$ 9,889