Earnings Per Unit - Schedule of Partnership's Basic Earnings (Loss) Per Common and Subordinated Unit (Detail) - USD ($)
$ / shares in Units, $ in Thousands |
3 Months Ended |
12 Months Ended |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Net income |
$ (1,116)
|
$ (8,794)
|
$ (9,745)
|
$ 29,821
|
$ 28,379
|
$ 8,580
|
$ (2,550)
|
$ 43,939
|
$ 10,166
|
$ 78,348
|
$ 122,814
|
| Income attributable to Kildair |
|
|
|
|
|
|
|
|
0
|
0
|
(4,080)
|
| Limited partners’ interest in net income |
$ (1,714)
|
$ (9,282)
|
$ (10,126)
|
$ 29,546
|
$ 28,212
|
$ 8,475
|
$ (2,599)
|
$ 43,939
|
8,424
|
78,027
|
118,734
|
| Distributions declared |
|
|
|
|
|
|
|
|
49,098
|
42,090
|
35,490
|
| Assumed net loss from operations after distributions |
|
|
|
|
|
|
|
|
$ (38,932)
|
$ (36,258)
|
$ (83,244)
|
| Income per unit - basic (in dollars per share) |
$ (0.08)
|
$ (0.44)
|
$ (0.48)
|
$ 1.39
|
$ 1.34
|
$ 0.40
|
$ (0.12)
|
$ 2.10
|
$ 0.40
|
$ 3.71
|
$ 5.88
|
| Income per unit - diluted (in dollars per share) |
$ (0.08)
|
$ (0.44)
|
$ (0.48)
|
$ 1.38
|
$ 1.32
|
$ 0.39
|
$ (0.12)
|
$ 2.06
|
$ 0.38
|
$ 3.65
|
$ 5.84
|
| Common Unitholders - Affiliated |
|
|
|
|
|
|
|
|
|
|
|
| Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Net income |
|
|
|
|
|
|
|
|
$ 4,436
|
$ 40,689
|
$ 59,543
|
| Distributions declared |
|
|
|
|
|
|
|
|
24,998
|
21,826
|
17,964
|
| Assumed net loss from operations after distributions |
|
|
|
|
|
|
|
|
$ (20,562)
|
$ (18,863)
|
$ (41,579)
|
| Income per unit - basic (in dollars per share) |
|
|
|
|
|
|
|
|
$ 0.40
|
$ 3.71
|
$ 5.88
|
| Income per unit - diluted (in dollars per share) |
|
|
|
|
|
|
|
|
$ 0.38
|
$ 3.65
|
$ 5.84
|
| Subordinated Unitholders - Affiliated |
|
|
|
|
|
|
|
|
|
|
|
| Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Net income |
|
|
|
|
|
|
|
|
$ 3,988
|
$ 37,338
|
$ 59,191
|
| Distributions declared |
|
|
|
|
|
|
|
|
22,358
|
19,943
|
17,526
|
| Assumed net loss from operations after distributions |
|
|
|
|
|
|
|
|
$ (18,370)
|
$ (17,395)
|
$ (41,665)
|
| Income per unit - basic (in dollars per share) |
|
|
|
|
|
|
|
|
$ 0.40
|
$ 3.71
|
$ 5.88
|
| Income per unit - diluted (in dollars per share) |
|
|
|
|
|
|
|
|
$ 0.40
|
$ 3.71
|
$ 5.88
|
| Incentive Distribution Rights |
|
|
|
|
|
|
|
|
|
|
|
| Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Net income |
|
|
|
|
|
|
|
|
$ 1,742
|
$ 321
|
$ 0
|
| Distributions declared |
|
|
|
|
|
|
|
|
1,742
|
321
|
0
|
| Assumed net loss from operations after distributions |
|
|
|
|
|
|
|
|
$ 0
|
$ 0
|
$ 0
|