Securities - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Proceeds from sales of securities available-for-sale	$ 0	$ 0	$ 16,515,000	$ 24,563,000
Realized gains			35,000
Realized losses			1,000	1,000
Proceeds from available-for-sale securities redeemed	5,000,000	$ 0	16,000,000
Called debt security, realized loss				$ 1,000
Collateral Pledged [Member]
Loans and Leases Receivable Disclosure [Line Items]
Restricted securities	$ 96,400,000		$ 96,400,000		$ 103,700,000