Leases - Elements of Lease Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 5,405
Finance lease cost:
Amortization of right-of-use assets	13,124
Interest on lease liabilities	3,205
Total finance lease cost	16,329
Other lease income, net	1,149
Total lease cost	$ 22,883