Leases - Summary of Additional Lease Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Lease Cost
Operating lease cost	$ 675	$ 2,030
Short term lease cost	9	26
Total lease cost	$ 684	2,056
Other information
Operating leases - operating cash flows		$ 2,015
Weighted average lease term - operating leases, in years	11 years 1 month 10 days	11 years 1 month 10 days
Weighted average discount rate - operating leases	3.33%	3.33%