Leasing Arrangements - Scheduled Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Operating leases
2020	$ 4,596
2021	4,775
2022	4,520
2023	3,862
2024	3,557
2025 and beyond	15,345
Total lease payments	36,655
Less: Imputed interest	12,344
Total lease liabilities	24,311
Finance leases
2020	23
2021	22
2022	13
2023	0
2024	0
2025 and beyond	0
Total lease payments	58
Less: Imputed interest	4
Total lease liabilities	$ 54