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Fair Value Measurements (Tables)
 9 Months Ended
Sep. 30, 2017
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
The following table sets forth a summary of the changes in fair value of these interest rate swaps (in thousands):
 
Nine Months Ended September 30,
 
2017
 
2016
Beginning balance
$
(3,175
)
 
$
(4,938
)
Realized (unrealized) losses included in interest expense
73

 
(33
)
Realized losses on derecognition of interest rate swaps included in earnings
273

 
—

Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss
1,076

 
1,208

Unrealized losses included in equity and partners’ capital
(280
)
 
(748
)
Ending balance
$
(2,033
)
 
$
(4,511
)