Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leases
Right of use asset	$ 9,490
Lease liability	9,552
Rent expense under operating leases, included in net occupancy and equipment expense	$ 2,880	$ 2,400	$ 3,700