Other Income and Operating Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Income and Expenses [Abstract]
Reporting threshold for other income and operating expenses (percent, greater than)			1.00%
Noninterest Income
Other service charges	$ 727	$ 616	$ 1,547	$ 1,366
Increase in cash surrender value of corporate owned life insurance	557	511	1,188	1,127
Other income	462	240	1,166	581
Total other income	1,746	1,367	3,901	3,074
Noninterest Expenses
Marketing expense	1,242	1,417	2,416	2,319
Professional fees	1,331	1,352	2,693	2,694
Legal fees	260	331	524	679
Technology expense	1,632	1,268	3,093	2,616
Cardholder expense	860	680	2,041	1,425
Other expenses	4,598	4,193	9,113	8,556
Total other operating expense	$ 9,923	$ 9,241	$ 19,880	$ 18,289