Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands		Total	Non-controlling Interests	Unitholders Common Units	Unitholders Subordinated Units	General Partner
Predecessor Equity Beginning Balance at Dec. 31, 2018		$ 6,227
Beginning balance at Dec. 31, 2018		557,672	$ 312,815	$ 192,581	$ 45,937	$ 112
Increase (Decrease) in Partners' Capital [Roll Forward]
Delaware predecessor capital contributions, net	[1]	4,902
Contributions from non-controlling interests		2,532	2,532
Distributions to non-controlling interests		(21,922)	(21,922)
Distributions to unitholders		(15,320)		(9,020)	(6,188)	(112)
Equity-based compensation		119		119
Other		(175)	(2,977)	2,881	(79)
Net income attributable to Delaware Predecessor	[1]	1,075
Net income (loss)	[1]	44,414	21,796	12,630	8,675	238
Predecessor Equity Ending Balance at Mar. 31, 2019		12,204
Ending balance at Mar. 31, 2019		572,222	312,244	199,191	48,345	238
Predecessor Equity Beginning Balance at Dec. 31, 2018		6,227
Beginning balance at Dec. 31, 2018		557,672	312,815	192,581	45,937	112
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income attributable to Delaware Predecessor	[2]	4,104
Net income (loss)	[2]	151,780
Predecessor Equity Ending Balance at Sep. 30, 2019		20,791
Ending balance at Sep. 30, 2019		606,774	313,781	213,468	57,989	745
Predecessor Equity Beginning Balance at Mar. 31, 2019		12,204
Beginning balance at Mar. 31, 2019		572,222	312,244	199,191	48,345	238
Increase (Decrease) in Partners' Capital [Roll Forward]
Delaware predecessor capital contributions, net	[1]	2,529
Contributions from non-controlling interests		1,709	1,709
Distributions to non-controlling interests		(21,659)	(21,659)
Distributions to unitholders		(16,122)		(9,421)	(6,463)	(238)
Equity-based compensation		100		100
Other		(217)		(102)	(115)
Net income attributable to Delaware Predecessor	[1]	1,211
Net income (loss)	[1]	50,246	22,837	15,241	10,466	491
Predecessor Equity Ending Balance at Jun. 30, 2019		15,944
Ending balance at Jun. 30, 2019		588,808	315,131	205,009	52,233	491
Increase (Decrease) in Partners' Capital [Roll Forward]
Delaware predecessor capital contributions, net	[1]	3,029
Contributions from non-controlling interests		870	870
Distributions to non-controlling interests		(26,086)	(26,086)
Distributions to unitholders		(17,051)		(9,823)	(6,737)	(491)
Equity-based compensation		84		84
Net income attributable to Delaware Predecessor	[2]	1,818
Net income (loss)	[1]	57,120	23,866	18,198	12,493	745
Predecessor Equity Ending Balance at Sep. 30, 2019		20,791
Ending balance at Sep. 30, 2019		606,774	313,781	213,468	57,989	745
Predecessor Equity Beginning Balance at Dec. 31, 2019		0
Beginning balance at Dec. 31, 2019		604,628	312,258	225,339	66,005	1,026
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions from non-controlling interests		6,167	6,167
Distributions to non-controlling interests		(25,964)	(25,964)
Distributions to unitholders		(19,265)		(10,833)	(7,425)	(1,007)
Equity-based compensation		66		66
Net income (loss)		(69,359)	2,040	(42,947)	(29,460)	1,008
Predecessor Equity Ending Balance at Mar. 31, 2020		0
Ending balance at Mar. 31, 2020		496,273	294,501	171,625	29,120	1,027
Predecessor Equity Beginning Balance at Dec. 31, 2019		0
Beginning balance at Dec. 31, 2019		604,628	312,258	225,339	66,005	1,026
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income attributable to Delaware Predecessor		0
Net income (loss)		(2,945)
Predecessor Equity Ending Balance at Sep. 30, 2020		0
Ending balance at Sep. 30, 2020		489,176	286,704	172,087	29,358	1,027
Predecessor Equity Beginning Balance at Mar. 31, 2020		0
Beginning balance at Mar. 31, 2020		496,273	294,501	171,625	29,120	1,027
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions from non-controlling interests		309	309
Distributions to non-controlling interests		(14,335)	(14,335)
Distributions to unitholders		(19,285)		(10,833)	(7,425)	(1,027)
Equity-based compensation		67		67
Net income (loss)		22,670	10,796	6,433	4,414	1,027
Predecessor Equity Ending Balance at Jun. 30, 2020		0
Ending balance at Jun. 30, 2020		485,699	291,271	167,292	26,109	1,027
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions from non-controlling interests		(1,077)	(1,077)
Distributions to non-controlling interests		(19,973)	(19,973)
Distributions to unitholders		(19,285)		(10,833)	(7,425)	(1,027)
Equity-based compensation		68		68
Net income attributable to Delaware Predecessor		0
Net income (loss)		43,744	16,483	15,560	10,674	1,027
Predecessor Equity Ending Balance at Sep. 30, 2020		0
Ending balance at Sep. 30, 2020		$ 489,176	$ 286,704	$ 172,087	$ 29,358	$ 1,027

[1] Retrospectively adjusted for the transfer of net assets between entities under common control. See Note 2 to our unaudited condensed consolidated financial statements.

[2] Retrospectively adjusted for the transfer of net assets between entities under common control. See Note 2 to our unaudited condensed consolidated financial statements.