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Partners' Capital, Mezzanine and Equity Distributions (Tables)
 12 Months Ended
Dec. 31, 2017
Equity [Abstract]  
Schedule of Paid Distributions
We paid distributions in 2018, 2017 and 2016 as follows:

Distribution For
Date Paid
 
Per Unit Amount
 
Total Amount
2015
 
 
 
 
 
4th Quarter
February 12, 2016
 
$
0.6550

 
$
72,036

2016
 
 
 
 
 
1st Quarter
May 13, 2016
 
$
0.6725

 
$
73,961

2nd Quarter
August 12, 2016
 
$
0.6900

 
$
81,406

3rd Quarter
November 14, 2016
 
$
0.7000

 
$
82,585

4th Quarter
February 14, 2017
 
$
0.7100

 
$
83,765

2017
 
 
 
 
 
1st Quarter
May 15, 2017
 
$
0.7200

 
$
88,257

2nd Quarter
August 14, 2017
 
$
0.7225

 
$
88,563

3rd Quarter
November 14, 2017
 
$
0.5000

 
$
61,290

4th Quarter
February 14, 2018
 
$
0.5100

 
$
62,515

 
New Common Units Issued to the Public For Cash
The new common units issued in 2017, 2016 and 2015 to the public for cash were as follows:
 
Period
  Purchaser of
Common Units
Units
 
Gross
Unit Price
 
Issuance Value
 
Costs
 
Net Proceeds
March 2017
Public
4,600

 
$
30.65

 
$
140,990

 
$
(477
)
 
$
140,513

July 2016
Public
8,000

 
$
37.90

 
$
303,200

 
$
(4,748
)
 
$
298,452

July 2015
Public
10,350

 
$
43.77

 
$
453,020

 
$
(15,856
)
 
$
437,164

April 2015
Public
4,600

 
$
44.42

 
$
204,332

 
$
(6,164
)
 
$
198,168
Schedule of Initial Measurement of Class A Convertible Preferred Units
The preferred units were initially recognized at their issuance date fair value, net of issuance costs. As discussed above, a portion of the net proceeds were allocated to the Preferred Distribution Rate Reset Election and recorded in Other long term liabilities on the Consolidated Balance Sheet as described below:
 
 
Year Ended December 31,
 
 
2017
Transaction price, gross
 
750,000

Transaction cost to other third parties
 
(23,581
)
Transaction price, net
 
726,419

 
 
 
Allocation of Net Transaction Price
 
 
Preferred Units, net
 
691,969

Preferred Distribution Rate Reset Election (Note 18)
 
34,450

 
 
726,419
Schedule of Changes in Class A Convertible Preferred Units
The following table shows the change in our Class A Convertible Preferred Units from initial measurement at September 1, 2017 to December 31, 2017:

 
 
 
Year Ended December 31,
 
 
2017
Balance as of December 31, 2016
 
—

Issuance of Preferred Units, net
 
726,419

Allocation to Preferred Distribution Rate Reset Election (Note 18)
 
(34,450
)
Distribution paid-in-kind
 
5,469

Allocation of Distribution paid-kind to Preferred Distribution Rate Reset Election (Note 18)
 
(287
)
Balance as of December 31, 2017
 
697,151


 
 
Year Ended December 31,
 
 
2017
Balance as of December 31, 2016
 
—

Issuance of Preferred Units
 
22,249,494

Distribution paid-in-kind
 
162,234

Balance as of December 31, 2017
 
22,411,728