Other Assets - Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Assets [Abstract]
Revenues	$ 2,807	$ 11,975	$ 10,218	$ 23,857
Expenses	$ 1,364	$ 1,111	$ 2,146	$ 2,085