Other Non-Interest Income and Expenses (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other non-interest income [Line Items]
Other Income		$ 1,545	$ 4,830	$ 2,363
Other income		3,119	6,934	3,877
Employee-related costs(1)		1,852	1,660	1,841
Travel and Entertainment Expense	[1]	1,710	1,616	1,437
Postage, freight, and courier		1,655	1,754	1,430
Labor and Related Expense		49,965	48,072	37,220
Other expenses		5,731	5,657	4,502
Total		10,948	10,687	9,210
Customer loan swaps
Other non-interest income [Line Items]
Interest and Other Income		$ 1,574	$ 2,104	$ 1,514

[1] Employee-related costs include hiring, training, education, meeting and business travel costs.