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EARNINGS PER UNIT (Tables)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Schedule of earnings per limited partner unit
The following table details the components of EPU.
 
Year ended December 31,
 
2015
 
2014
 
2013
 
 
 
 
 
 
 
(In thousands, except per-unit amounts)
Numerator for basic and diluted EPU:
 
 
 
 
 
Allocation of net (loss) income among limited partner interests:
 
 
 
 
 
Net (loss) income attributable to common units
$
(125,437
)
 
$
(16,324
)
 
$
23,227

Net (loss) income attributable to subordinated units
(70,173
)
 
(10,793
)
 
19,322

Net (loss) income attributable to limited partners
$
(195,610
)
 
$
(27,117
)
 
$
42,549

 
 
 
 
 
 
Denominator for basic and diluted EPU:
 
 
 
 
 
Weighted-average common units outstanding – basic
39,217

 
33,311

 
26,951

Effect of nonvested phantom units
—

 
—

 
150

Weighted-average common units outstanding – diluted
39,217

 
33,311

 
27,101

 
 
 
 
 
 
Weighted-average subordinated units outstanding – basic and diluted
24,410

 
24,410

 
24,410

 
 
 
 
 
 
(Loss) earnings per limited partner unit:
 
 
 
 
 
Common unit – basic
$
(3.20
)
 
$
(0.49
)
 
$
0.86

Common unit – diluted
$
(3.20
)
 
$
(0.49
)
 
$
0.86

Subordinated unit – basic and diluted
$
(2.88
)
 
$
(0.44
)
 
$
0.79