Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Summary of Long-term Debt

The following table summarizes the Company’s long-term debt:

	December 31,
	2017			2016
8% Senior Notes, redeemed in April 2017	$	—		$	40,250
3.875% Convertible Senior Notes, due March 15, 2019		89,990			89,990
4.25% Convertible Senior Notes, due March 1, 2037		143,750			—
3.95% Promissory note, due through February 17, 2020		9,360			—
4% Promissory note, due through February 1, 2031		8,348			8,821
3.75% Promissory note, due through September 1, 2036		8,613			8,924
Total principal amount		260,061			147,985
Less: unamortized discount and issuance costs		(22,226	)		(9,122	)
Total long-term debt	$	237,835		$	138,863

Summary of Future Maturities of Long-Term Debt

The following table summarizes future maturities of long-term debt as of December 31, 2017, which takes into consideration the assumption that the 4.25% Convertible Senior Notes are repurchased at the earliest call date.

Year
2018	$	1,049
2019		91,081
2020		9,761
2021		916
2022		144,702
Thereafter		12,552
Total	$	260,061

Schedule of Interest Expense Related to Long-Term Debt

Information with respect to interest expense related to long-term debt is as follows:

	Years Ended December 31,
	2017			2016		2015
Interest Expense:
Contractual interest	$	10,424		$	7,315	$	7,211
Non-cash expense (a)		6,404			3,529		3,543
Capitalized interest (b)		(61	)		—		—
Total	$	16,767		$	10,844	$	10,754

(a) Represents amortization of debt discount and issuance costs.

(b) Interest was capitalized for a construction project in Riverview, Florida which is intended for lease.

Summary of Principal and Interest Payment Terms of Convertible Senior Notes

The following table summarizes the principal and interest payment terms of these Convertible Senior Notes:

Convertible Senior Notes	Interest Payment Terms
3.875% Convertible Notes, due March 15, 2019	Semiannually in arrears: March 15 and September 15
4.25% Convertible Notes, due March 1, 2037	Semiannually in arrears: March 1 and September 1

Summary of Equity and Liability Components of the Convertible Senior Notes

The following table summarizes information regarding the equity and liability components of the Convertible Senior Notes:

	December 31,
	2017			2016
Principal amount	$	233,740		$	89,990
Unamortized discount		(17,354	)		(6,795	)
Liability component – net carrying value before issuance costs	$	216,386		$	83,195
Equity component – conversion, net of offering costs	$	31,051		$	15,900