CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Comprehensive income, net of tax:
Net income		$ 10,516	$ 7,996	$ 19,295	$ 158,731
Other comprehensive income (loss):
Interest rate swaps (a)	[1]	180	497	(2,070)	(14,876)
Capitalized swap interest expense (b)	[2]	(40)	154	(161)	(163)
Pension adjustment (c)	[3]		(317)		(890)
Other comprehensive income (loss)		140	334	(2,231)	(15,929)
Comprehensive income		10,656	8,330	17,064	142,802
Comprehensive income attributable to noncontrolling interests		(12)	(23)	(12)	(23)
Comprehensive income attributable to common stockholders		$ 10,644	$ 8,307	$ 17,052	$ 142,779

[1] Net of deferred tax expense of $0.1 million and $0.2 million for the three months ended September 30, 2017 and 2016, respectively. Amount is net of deferred benefit of $1.3 million and $8.1 million for the nine months ended September 30, 2017 and 2016, respectively.

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

[3] Net of deferred tax benefit of $0.1 million and $0.5 million for the three and nine months ended September 30, 2016, respectively.