Leases - Maturities of lease liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Operating leases
2020	$ 7,188
2021	3,955
2022	3,110
2023	2,841
2024	2,709
Thereafter	2,371
Total lease payments	22,174
Less imputed interest	(2,553)
Lease liability	19,621
Financing leases
2020	355
2021	315
2022	86
2023	37
2024	6
Thereafter	0
Total lease payments	799
Less imputed interest	(48)
Total	$ 751