Operating lease liability maturities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Lessee Disclosure [Abstract]
Operating lease liability payments, due 2020	$ 21,102
Operating lease liability payments, due 2021	12,600
Operating lease liability payments, due 2022	5,749
Operating lease liability payments, due 2023	3,602
Operating lease liability payments, due 2024	2,081
Operating lease liability payments, due thereafter	1,639
Total Lease payments	46,773
Imputed interest	(4,447)	[1]
Total operating lease liability	$ 42,326
Weighted-average discount rate	6.60%

[1] ⁽¹⁾  The weighted-average discount rate used to determine the operating lease liability as of December 31, 2019 was 6.6 percent.