Securities Sold Under Agreements to Repurchase (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Securities Sold Under Agreements To Repurchase [Line Items]
Total repurchase agreements	$ 1,675	$ 1,922
Repurchase Agreements
Securities Sold Under Agreements To Repurchase [Line Items]
Total collateral carrying value	2,766	2,750
Repurchase Agreements | U.S. Government-sponsored mortgage-backed securities
Securities Sold Under Agreements To Repurchase [Line Items]
Total collateral carrying value	$ 2,766	$ 2,750