Leases - Summary of minimum future rental payments required (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Operating Leases
2020	$ 17,149
2021	17,004
2022	16,867
2023	11,055
2024	9,068
Thereafter	131,347
Total undiscounted rental payments	202,490
Less imputed interest	(102,085)
Total lease liabilities	100,405
Finance Lease, Liability, Payment, Due [Abstract]
2020	2,106
2021	10,441
2022	2,418
2023	0
2024	0
Thereafter	0
Total undiscounted rental payments	14,965
Less imputed interest	(1,169)
Total lease liabilities	$ 13,796