Leases - Components of Lease Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 10,725
Variable lease cost	1,645
Short-term lease cost	1,871
Finance lease cost:
Amortization of right of use assets	91
Interest on lease liabilities	25
Total finance lease cost	116
Less: Sublease income	(268)
Total lease cost	$ 14,089