Net Income (Loss) Per Limited Partner Unit - Net Income (Loss) per Unit (Parenthetical) (Details) - Landmark Dividend LLC		3 Months Ended
Feb. 15, 2018 item	Mar. 31, 2018 shares
Limited Partners Capital Account [Line Items]
Number of common units that will convert from each outstanding subordinated unit \| item	1
Common Units
Limited Partners Capital Account [Line Items]
Number of units converted \| shares		3,135,109

The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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Balance Type:	na
Period Type:	duration