Leases - Additional information regarding real estate operating leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Lease cost:
Operating lease	$ 62
Other information on operating lease:
Cash payments included in the measurement of lease liability reported in operating cash flows	71
Operating lease liability	$ 908
Weighted average discount rate	3.90%
Weighted average remaining lease term in years	3 years 6 months
Other assets
Other information on operating lease:
Operating lease, right-of-use asset	$ 908
Other liabilities
Other information on operating lease:
Operating lease liability	$ 908