Partnership Income, Expenses and Cash Distributions - Additional Information (Details)	Jun. 30, 2019
Partners capital account, fixed rate	3.00%
Tier 1 [Member] | Limited Partner [Member]
Percent of regular allocations	99.00%
Tier 1 [Member] | General Partner [Member]
Percent of regular allocations	1.00%
Tier 2 [Member] | Limited Partner [Member]
Percent of special allocations	75.00%
Tier 2 [Member] | General Partner [Member]
Percent of special allocations	25.00%
Tier 3 [Member] | Limited Partner [Member]
Percent of special allocations	100.00%