Fair Value of Financial Instruments - Schedule of Fair Value Hierarchy Level and Estimated Fair Value of Significant Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial Assets:
Investment securities - AFS	$ 72,923	$ 73,762
Investment securities - HTM	9,053	9,940
Carrying Value
Financial Assets:
Cash and due from banks	136,076	147,685
Federal funds sold and other cash equivalents	47,000
Interest-earning deposits in other financial institutions	949	600
Investment securities - AFS	72,923	73,762
Investment securities - HTM	8,724	9,961
Mortgage loans held for sale	259,339	434,522
Loans, net	2,106,759	2,124,438
Equity Security	11,783	10,039
Financial Liabilities:
Deposits	2,251,923	2,144,041
FHLB advances	35,000	319,500
Long-term debt	103,964	103,708
Subordinated debenture liability	9,632	9,506
Fair Value | Fair Value, Inputs, Level 1
Financial Assets:
Cash and due from banks	136,076	147,685
Federal funds sold and other cash equivalents	47,000
Interest-earning deposits in other financial institutions	949	600
Mortgage loans held for sale	261,554	438,948
Fair Value | Fair Value Measurements Using Level 2
Financial Assets:
Investment securities - AFS	72,923	73,762
Investment securities - HTM	9,053	9,940
Financial Liabilities:
Deposits	2,254,171	2,143,196
FHLB advances	35,000	319,500
Long-term debt	106,673	79,756
Fair Value | Fair Value Measurements Using Level 3
Financial Assets:
Loans, net	2,110,859	2,114,341
Equity Security	11,783	10,039
Financial Liabilities:
Subordinated debenture liability	$ 10,865	$ 10,356