Securities - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) security	Dec. 31, 2019 USD ($)	Mar. 31, 2019 item
Additional Information
The number of holdings of securities of any one issuer other than the U.S. Government and its sponsored entities | security	0
Holdings of securities as percentage of shareholders' equity, considered as threshold for disclosure purpose	10.00%
Number of securities held | item			442
Number of available for sale securities held | item			128
Number of held to maturity securities held | item			314
12 Months or More	$ 1,183	$ 88,128
Total unrealized loss for securities 12 months or more	1
Available-for-sale securities carried with an unrealized loss for over 12 months		27,534
Held-to-maturity securities carried with an unrealized loss for over 12 months	$ 1,183	$ 88,128