Fair Value - Carrying Amount and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Securities available for sale	$ 533,970	$ 516,863
Carrying Amount
ASSETS
Cash and cash equivalents	37,930	45,563
Securities available for sale	533,970	516,863
Trading securities	8,904	7,786
Loans held for sale	2,032	367
Net loans	2,600,921	2,454,853
FHLB and other restricted interests	24,501	24,508
Interest rate swaps	1,802	485
Accrued interest receivable	12,020	10,843
LIABILITIES
Deposits	(2,734,762)	(2,610,786)
FHLB and other borrowings	(257,784)	(245,117)
Subordinated debentures	(70,620)	(70,620)
Interest rate swaps	(2,328)	(686)
Accrued interest payable	(990)	(863)
Total Fair Value
ASSETS
Cash and cash equivalents	37,930	45,563
Securities available for sale	533,970	516,863
Trading securities	8,904	7,786
Loans held for sale	2,037	368
Net loans	2,578,210	2,433,417
Interest rate swaps	1,802	485
Accrued interest receivable	12,020	10,843
LIABILITIES
Deposits	(2,735,385)	(2,612,719)
FHLB and other borrowings	(260,361)	(242,592)
Subordinated debentures	(64,791)	(65,794)
Interest rate swaps	(2,328)	(686)
Accrued interest payable	(990)	(863)
Quoted Prices in Active Markets for Identical Assets \| Total Fair Value
ASSETS
Cash and cash equivalents	37,930	45,563
Securities available for sale	960	934
Trading securities	8,853	7,735
Loans held for sale	0	0
Net loans	0	0
Interest rate swaps	0	0
Accrued interest receivable	6	6
LIABILITIES
Deposits	(2,379,635)	(2,215,349)
FHLB and other borrowings	0	0
Subordinated debentures	0	0
Interest rate swaps	0	0
Accrued interest payable	0	0
Significant Other Observable Inputs \| Total Fair Value
ASSETS
Cash and cash equivalents	0	0
Securities available for sale	533,010	515,929
Trading securities	51	51
Loans held for sale	2,037	368
Net loans	0	0
Interest rate swaps	1,802	485
Accrued interest receivable	3,310	3,368
LIABILITIES
Deposits	(355,750)	(397,370)
FHLB and other borrowings	(260,361)	(242,592)
Subordinated debentures	(64,791)	(65,794)
Interest rate swaps	(2,328)	(686)
Accrued interest payable	(990)	(863)
Significant Unobservable Inputs \| Total Fair Value
ASSETS
Cash and cash equivalents	0	0
Securities available for sale	0	0
Trading securities	0	0
Loans held for sale	0	0
Net loans	2,578,210	2,433,417
Interest rate swaps	0	0
Accrued interest receivable	8,704	7,469
LIABILITIES
Deposits	0	0
FHLB and other borrowings	0	0
Subordinated debentures	0	0
Interest rate swaps	0	0
Accrued interest payable	$ 0	$ 0

Federal Home Loan Bank, and Other Restricted Equity Interests

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Fair value portion of amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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