Related Party Transactions - Schedule of Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transactions [Abstract]
Total revenue from related parties													$ 228,100	$ 32,381	$ 2,176
Interest expense on debt to related parties	$ 1,933	$ 1,605	$ 1,606	$ 1,612	$ 1,628	$ 1,966	$ 2,672	$ 2,627	$ 3,218	$ 5,299	$ 4,823	$ 7,265	6,756	8,893	12,265
Consulting expenses paid to related parties (included in general and administrative expense)													$ 0	$ 125	$ 206