Leases - Lease Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Leases [Abstract]
Lease liabilities	$ 5,542	$ 5,542
Right-of-use assets	$ 5,520	$ 5,520
Weighted average remaining lease term	8 years 4 months	8 years 4 months
Weighted average discount rate	3.21%	3.21%
Operating lease cost	$ 283	$ 777
Short-term lease cost	1	2
Total lease cost	284	779
Cash paid for amounts included in the measurement of lease liabilities	$ 274	$ 757