New Accounting Standards (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
New Accounting Standards [Abstract]
Non-interest income		$ 6,278
Interchange Income [Member]
New Accounting Standards [Abstract]
Non-interest income		2,246		$ 1,922
Interchange Expense [Member]
New Accounting Standards [Abstract]
Non-interest expense		598
Investment and Insurance Commissions [Member]
New Accounting Standards [Abstract]
Non-interest income		438
ASU 2018-02 [Member]
New Accounting Standards [Abstract]
Reclassification of certain deferred tax effects			$ 40
Under Legacy GAAP [Member] | Interchange Income [Member]
New Accounting Standards [Abstract]
Non-interest income		1,938
Under Legacy GAAP [Member] | Interchange Expense [Member]
New Accounting Standards [Abstract]
Non-interest expense		290
Impact [Member]
New Accounting Standards [Abstract]
Impact on net income		0
Impact [Member] | ASU 2014-09 [Member] | Interchange Income [Member]
New Accounting Standards [Abstract]
Non-interest income	[1]	308
Impact [Member] | ASU 2014-09 [Member] | Interchange Expense [Member]
New Accounting Standards [Abstract]
Non-interest expense	[1]	$ 308

[1] Represents certain costs charged by payment networks that were previously netted against interchange income.