CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Comprehensive income, net of tax:
Net income		$ 3,120	$ 6,970	$ 8,779	$ 150,735
Other comprehensive income (loss):
Interest rate swaps (a)	[1]	(2,683)	(5,565)	(2,250)	(15,373)
Capitalized swap interest expense (b)	[2]	(46)	(254)	(121)	(317)
Pension adjustment (c)	[3]		(573)		(573)
Other comprehensive income (loss)		(2,729)	(6,392)	(2,371)	(16,263)
Comprehensive income		391	578	6,408	134,472
Comprehensive income attributable to common stockholders		$ 391	$ 578	$ 6,408	$ 134,472

[1] Net of deferred tax benefit of $1.5 million and $3.0 million for the three months ended June 30, 2017 and 2016, respectively, $1.2 million and $8.3 million for the six months ended June 30, 2017 and 2016, respectively.

[2] The deferred tax impact was immaterial for the three months ended June 30, 2017 and 2016, respectively. Amount is net of deferred tax benefit of $0.1 million for the six months ended June 30, 2017 and 2016, respectively.

[3] Net of deferred tax benefit of $0.4 million for the three and six months ended June 30, 2016, respectively.