Leases - Components of Lease Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 7,279
Finance lease cost:
Amortization of right-of-use assets	341
Interest on lease liabilities	60
Total finance lease cost	401
Short-term lease cost	7,357
Total lease expense	$ 15,037