Debt, Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest costs [Abstract]
Amortization of debt issuance costs			$ 6,965	$ 2,589
Interest expense	$ 17,198	$ 6,199	31,088	9,483
Debt [Member]
Interest costs [Abstract]
Interest per contractual rates	19,766	8,475	38,640	13,364
Amortization of debt issuance costs	5,728	3,166	10,350	5,230
Total interest costs	25,494	11,641	48,990	18,594
Capitalized interest	8,296	5,442	17,902	9,111
Interest expense	$ 17,198	$ 6,199	$ 31,088	$ 9,483