Debt - Debt related expenses included within Interest expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt related expenses included within Interest expense:
Interest Expense, Debt	$ 16,788	$ 6,158	$ 3,892
Amortization of debt issuance costs	1,979	70	241
Total	$ 18,767	$ 6,228	$ 4,133