Financial Instruments - Additional Information (Details)	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments Gain/ (Loss) [Line Items]
Debt variable rate basis	LIBOR
Account for more than 10% of the partnership's revenue
Derivative Instruments Gain/ (Loss) [Line Items]
Number of customers	2	2

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

No definition available.

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration