Equity (Details 3) - USD ($) $ in Thousands								3 Months Ended	12 Months Ended
		May 15, 2020	Feb. 14, 2020	Nov. 14, 2019	Aug. 14, 2019	May 15, 2019	Feb. 14, 2019	Mar. 31, 2020	Dec. 31, 2019
Total Distributions			$ 2,534	$ 2,534	$ 2,534	$ 2,531	$ 2,510	$ 5,096	$ 10,109
Subsequent Event [Member]
Total Distributions	[1]	$ 2,562
Preferred Units [Member]
Total Distributions			1,033	1,034	1,033	1,033	1,033	2,066	4,133
Preferred Units [Member] | Subsequent Event [Member]
Total Distributions		1,033
Preferred Units [Member] | Total Cash Distribution [Member]
Total Distributions			$ 1,033	$ 1,034	$ 1,033	$ 1,033	$ 1,033	$ 2,066	$ 4,133
Preferred Units [Member] | Total Cash Distribution [Member] | Subsequent Event [Member]
Total Distributions		$ 1,033

[1] First quarter 2020 distribution was declared and will be paid in the second quarter of 2020.