Repurchase Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Assets Sold under Agreements to Repurchase [Line Items]
Maturity period	1 day
Repurchase agreement obligations	$ 31,487	$ 31,821
U.S. Treasury and U.S. Government-sponsored agencies
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreement obligations	4,878	0
Residential mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreement obligations	9,335	11,239
Commercial mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreement obligations	$ 17,274	$ 20,582