Selected Quarterly Financial Information—Unaudited (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Information

Quarterly financial data was as follows for the periods indicated. 

	First Quarter		Second Quarter			Third Quarter		Fourth Quarter2
	(In thousands, except for per unit data)
2017
Total revenue	$	124,582	$	120,524		$	89,111	$	95,442
Income (loss) from operations	65,015		57,840			26,216		23,013
Net income (loss)	61,583		54,174			22,034		19,362
Net income (loss) attributable to the general partner and common and subordinated units	60,460		53,518			21,388		16,779
Net income (loss) attributable to common and subordinated units per unit (basic)1
Per common unit (basic)	0.37		0.33			0.16		0.15
Per subordinated unit (basic)	0.26		0.22			0.05		0.03
Net income (loss) attributable to common and subordinated units per unit (diluted)1
Per common unit (diluted)	0.37		0.33			0.16		0.15
Per subordinated unit (diluted)	0.26		0.22			0.05		0.03
Cash distributions declared and paid per limited partner unit
Per common  unit	$	0.2875	$	0.2875		$	0.3125	$	0.3125
Per subordinated unit	$	0.1838	$	0.1838		$	0.2088	$	0.2088
Total assets	$	1,199,722	$	1,250,086		$	1,246,070	$	1,576,451
Long-term debt	388,000		393,000			362,000		388,000
Total mezzanine equity	34,145		27,085			27,092		322,422
2016
Total revenue	$	64,381	$	40,569		$	99,171	$	56,712
Net income (loss)	11,610		(19,478		)	39,316		(3,979		)
Income (loss) from operations	10,749		(20,810		)	37,535		(7,286		)
Net income (loss) attributable to the general partner and common and subordinated units	8,943		(22,111		)	36,219		(8,614		)
Net income (loss) attributable to common and subordinated units per unit (basic)1
Per common unit (basic)	0.09		(0.08		)	0.24		0.01
Per subordinated unit (basic)	0.01		(0.15		)	0.14		(0.11		)
Net income (loss) attributable to common and subordinated units per unit (diluted)1
Per common unit (diluted)	0.09		(0.08		)	0.24		0.01
Per subordinated unit (diluted)	0.01		(0.15		)	0.14		(0.11		)
Cash distributions declared per limited partner unit
Per common  unit	$	0.2625	$	0.2625		$	0.2875	$	0.2875
Per subordinated unit	$	0.1838	$	0.1838		$	0.1838	$	0.1838
Total assets	1,045,843		1,126,830			1,137,232		1,128,827
Long-term debt	116,000		285,000			299,000		316,000
Total mezzanine equity	54,001		54,001			54,015		54,015

¹ See Note 13 – Earnings Per Unit in the consolidated financial statements.

² Reported volumes in the fourth quarter of 2016 were negatively impacted by production shut-ins estimated at 1.0 MBoe/d for the quarter related to offset completion work and processing plant downtime in the Haynesville Shale.