General - Leases - Lease Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Components of leases expenses:
Operating lease cost	$ 2,503	$ 4,604
Amortization of right-of-use asset	1,046	2,378
Interest on lease liabilities	213	427
Total finance lease cost	1,259	2,805
Short-term lease cost	80	204
Variable lease cost	505	1,011
Total lease cost	4,347	8,624
Sublease income	(66)	(179)
Net lease cost	$ 4,281	$ 8,445