Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2017

Compensation Related Costs [Abstract]

Long-Term Incentive Compensation Plan Expense

The following table summarizes the outstanding LTIP awards as of December 31, 2017:

	Units Outstanding	Maximum Value		Inception to date earned through December 31, 2017 on outstanding units
2013 grant	194,250	$	48,562,500	$	38,958,780
2014 grant	207,000	20,700,000		12,916,800
2015 grant	208,500	20,850,000		10,800,300
2016 grant	229,250	22,925,000		7,581,298
2017 grant	227,000	22,700,000		3,162,110

The following table summarizes the LTIP expense for each of the three years ended December 31, 2017:

(In thousands)	2017		2016			2015
2011 grant	$	—	$	(82	)	$	7,397
2013 grant	7,667		8,918			7,336
2014 grant	3,167		3,503			2,935
2015 grant	3,667		4,072			3,205
2016 grant	3,601		4,002			—
2017 grant	3,162		—			—
Total	$	21,264	$	20,413		$	20,873