Borrowings - Summary of Borrowings By Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Schedule of Borrowings [Line Items]
Balance at End of Year	$ 196,171	$ 24,211
Balance at End of Year	$ 127,522	$ 0
Federal Home Loan Bank Advances [Member]
Schedule of Borrowings [Line Items]
Weighted Average Interest Rate	0.94%
Maximum Amount Outstanding at Month End During the Year	$ 96,471
Average Amount Outstanding During the Year	$ 45,179
Weighted Average Interest Rate During the Year	0.89%
Balance at End of Year	$ 96,248
Securities Sold under Agreements to Repurchase [Member]
Schedule of Borrowings [Line Items]
Weighted Average Interest Rate	0.91%
Maximum Amount Outstanding at Month End During the Year	$ 31,475
Average Amount Outstanding During the Year	$ 15,786
Weighted Average Interest Rate During the Year	0.93%
Balance at End of Year	$ 31,274
Subordinated Debt [Member]
Schedule of Borrowings [Line Items]
Weighted Average Interest Rate	5.27%	5.36%
Maximum Amount Outstanding at Month End During the Year	$ 94,087	$ 49,377
Average Amount Outstanding During the Year	$ 71,851	$ 37,431
Weighted Average Interest Rate During the Year	5.39%	5.40%
Balance at End of Year	$ 94,087	$ 49,377
Federal Home Loan Bank Advances [Member]
Schedule of Borrowings [Line Items]
Balance at End of Year	$ 91,300	$ 0
Weighted Average Interest Rate	0.74%	0.00%
Maximum Amount Outstanding at Month End During the Year	$ 206,000	$ 9,100
Average Amount Outstanding During the Year	$ 50,757	$ 1,335
Weighted Average Interest Rate During the Year	0.58%	0.34%
Federal Funds Purchased [Member]
Schedule of Borrowings [Line Items]
Balance at End of Year	$ 80,000	$ 0
Weighted Average Interest Rate	0.81%	0.00%
Maximum Amount Outstanding at Month End During the Year	$ 125,000	$ 39,150
Average Amount Outstanding During the Year	$ 24,783	$ 3,877
Weighted Average Interest Rate During the Year	0.61%	0.38%
Securities Sold under Agreements to Repurchase [Member]
Schedule of Borrowings [Line Items]
Balance at End of Year	$ 24,871	$ 24,211
Weighted Average Interest Rate	0.05%	0.05%
Maximum Amount Outstanding at Month End During the Year	$ 30,011	$ 43,161
Average Amount Outstanding During the Year	$ 26,173	$ 30,720
Weighted Average Interest Rate During the Year	0.05%	0.05%
Short-term Debt [Member]
Schedule of Borrowings [Line Items]
Balance at End of Year	$ 0
Weighted Average Interest Rate	0.00%
Maximum Amount Outstanding at Month End During the Year	$ 79,960
Average Amount Outstanding During the Year	$ 1,525
Weighted Average Interest Rate During the Year	18.83%