Fair Value Measurements - Carrying and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018		Jun. 30, 2018
Financial Assets:
Equity securities, at fair value	$ 125	$ 1,830	[1]	$ 2,177
Securities available for sale	334,326	332,653	[1]
Financial Liabilities:
Other short-term borrowings	13,528	0	[1]
Level 1
Financial Assets:
Cash and cash equivalents	54,914	64,255
Equity securities, at fair value	0
Securities available for sale	0	0
Restricted stock	0	0
Loans held for sale	0	0
Loans, net of allowance	0	0
Bank owned life insurance	0	0
Accrued interest receivable	0	0
Financial Liabilities:
Deposits	0	0
Repurchase agreements	0	0
Subordinated and junior subordinated debt		0
Accrued interest payable	0	0
Derivative - cash flow hedges	0	0
Level 2
Financial Assets:
Cash and cash equivalents	0	0
Equity securities, at fair value	125	1,830
Securities available for sale	334,326	332,653
Restricted stock	7,796	5,247
Loans held for sale	3,165	640
Loans, net of allowance	0	0
Bank owned life insurance	27,451	18,941
Accrued interest receivable	7,375	5,449
Financial Liabilities:
Deposits	2,000,234	1,570,721
Repurchase agreements	37,222	35,243
Subordinated and junior subordinated debt		0
Accrued interest payable	1,462	795
Derivative - cash flow hedges	2,615	804
Level 3
Financial Assets:
Cash and cash equivalents	0	0
Equity securities, at fair value	0
Securities available for sale	0	0
Restricted stock	0	0
Loans held for sale	0	0
Loans, net of allowance	1,811,890	1,334,236
Bank owned life insurance	0	0
Accrued interest receivable	0	0
Financial Liabilities:
Deposits	0	0
Repurchase agreements	0	0
Subordinated and junior subordinated debt		22,577
Accrued interest payable	0	0
Derivative - cash flow hedges	0	0
Carrying Value
Financial Assets:
Cash and cash equivalents	54,914	64,255
Equity securities, at fair value	125	1,830
Securities available for sale	334,326	332,653
Restricted stock	7,796	5,247
Loans held for sale	3,165	640
Loans, net of allowance	1,823,455	1,344,671
Bank owned life insurance	27,451	18,941
Accrued interest receivable	7,375	5,449
Financial Liabilities:
Deposits	1,999,097	1,566,227
Repurchase agreements	37,222	35,243
Subordinated and junior subordinated debt		27,927
Accrued interest payable	1,462	795
Derivative - cash flow hedges	2,615	804
Fair Value
Financial Assets:
Cash and cash equivalents	54,914	64,255
Equity securities, at fair value	125	1,830
Securities available for sale	334,326	332,653
Restricted stock	7,796	5,247
Loans held for sale	3,165	640
Loans, net of allowance	1,811,890	1,334,236
Bank owned life insurance	27,451	18,941
Accrued interest receivable	7,375	5,449
Financial Liabilities:
Deposits	2,000,234	1,570,721
Repurchase agreements	37,222	35,243
Subordinated and junior subordinated debt		22,577
Accrued interest payable	1,462	795
Derivative - cash flow hedges	2,615	$ 804
Short-term Debt | Level 1
Financial Liabilities:
Other short-term borrowings	0
Short-term Debt | Level 2
Financial Liabilities:
Other short-term borrowings	13,528
Short-term Debt | Level 3
Financial Liabilities:
Other short-term borrowings	0
Short-term Debt | Carrying Value
Financial Liabilities:
Other short-term borrowings	13,528
Short-term Debt | Fair Value
Financial Liabilities:
Other short-term borrowings	13,528
Subordinated Debt | Level 1
Financial Liabilities:
Subordinated and junior subordinated debt	0
Subordinated Debt | Level 2
Financial Liabilities:
Subordinated and junior subordinated debt	7,568
Subordinated Debt | Level 3
Financial Liabilities:
Subordinated and junior subordinated debt	0
Subordinated Debt | Carrying Value
Financial Liabilities:
Subordinated and junior subordinated debt	7,526
Subordinated Debt | Fair Value
Financial Liabilities:
Subordinated and junior subordinated debt	7,568
Junior Subordinated Debt | Level 1
Financial Liabilities:
Subordinated and junior subordinated debt	0
Junior Subordinated Debt | Level 2
Financial Liabilities:
Subordinated and junior subordinated debt	0
Junior Subordinated Debt | Level 3
Financial Liabilities:
Subordinated and junior subordinated debt	24,528
Junior Subordinated Debt | Carrying Value
Financial Liabilities:
Subordinated and junior subordinated debt	27,978
Junior Subordinated Debt | Fair Value
Financial Liabilities:
Subordinated and junior subordinated debt	$ 24,528

[1] Derived from audited consolidated financial statements.