Borrowings - Summary of Borrowings By Type (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 86,765	$ 105,431
Balance at End of Period	145,430	155,828
Federal Home Loan Bank Advances [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 115,000	$ 125,036
Weighted Average Interest Rate	1.82%	1.73%
Securities Sold under Agreements to Repurchase [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 30,430	$ 30,792
Weighted Average Interest Rate	2.14%	1.52%
Subordinated Debt [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 94,514	$ 94,331
Weighted Average Interest Rate	5.34%	5.35%
Federal Home Loan Bank Advances [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 16,980	$ 30,225
Weighted Average Interest Rate	2.38%	1.54%
Federal Funds Purchased [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 50,000	$ 55,000
Weighted Average Interest Rate	2.33%	1.56%
Securities Sold under Agreements to Repurchase [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 19,785	$ 20,206
Weighted Average Interest Rate	0.05%	0.05%