Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule of Components of Debt

Debt consists of the following at:

	December 31,
	2018		2017
	(in thousands)
$400 million senior unsecured notes with an effective interest rate of 6.0% less deferred issuance costs of $3.2 million and $3.9 million at December 31, 2018 and December 31, 2017, respectively	$	396,844	$	396,057
$250 million senior unsecured notes with an effective interest rate of 6.19% less a discount and deferred issuance costs of $0.5 million and $0.8 million at December 31, 2018 and December 31, 2017, respectively	249,489		249,182
$600 million senior unsecured credit facility with an effective interest rate of 3.50%, less deferred issuance costs of $3.0 million at December 31, 2018	87,582		—
$450 million senior unsecured credit facility with an effective interest rate of 2.84%, less deferred issuance costs of $2.1 million at December 31, 2017	—		67,936
Construction loan with an effective interest rate of 6.70%, less deferred issuance costs of $0.9 million at December 31, 2018	7,652		—
Fixed rate collateralized mortgage with an effective interest rate of 4.57%, plus a fair value adjustment of $0.4 million and $0.6 million at December 31, 2018 and December 31, 2017, respectively	8,197		8,853
Economic development loans with an effective interest rate of 3.0% at December 31, 2018 and December 31, 2017, respectively	4,240		3,712
Other notes payable	607		784
Total debt	$	754,611	$	726,524
Less current portion	1,097		1,232
Total long-term debt	$	753,514	$	725,292

Schedule of Maturities of Long-term Debt

Scheduled principal maturities of debt, net of unamortized discounts, premiums and deferred issuance costs, as of December 31, 2018 were as follows:

Year Ending:	Senior Notes		Revolving Credit Facility		Other Notes Payable		Total
	(in thousands)
2019	$	—	$	—	$	1,097	$	1,097
2020	249,489		—		7,707		257,196
2021	—		—		—		—
2022	396,844		—		7,652		404,496
2023	—		87,582		4,240		91,822
Thereafter	—		—				—
Total payments	$	646,333	$	87,582	$	20,696	$	754,611