Debt (Tables)

3 Months Ended

Mar. 31, 2019

Debt Instrument [Line Items]

Debt Outstanding Excluding Lease Obligations

Debt outstanding, excluding lease obligations, consists of the following:

	March 31, 2019						December 31, 2018
(In thousands)	Principal Balance		Unamortized Discount and Debt Issuance Costs		Net Carrying Amount		Principal Balance		Unamortized Discount and Debt Issuance Costs		Net Carrying Amount
1.25% Cash Convertible    Senior Notes	$	345,000	$	18,534	$	326,466	$	345,000	$	22,112	$	322,888
Senior Secured Credit Facility		465,000		5,660		459,340		350,000		6,038		343,962
Other debt		952		0		952		748		0		748
Total debt	$	810,952	$	24,194	$	786,758	$	695,748	$	28,150	$	667,598
Less: Debt payable within    one year		20,952		434		20,518		20,538		479		20,059
Total long-term debt, less    current maturities	$	790,000	$	23,760	$	766,240	$	675,210	$	27,671	$	647,539

Interest Expense

Interest expense consists of the following:

	Three Months Ended March 31,
(In thousands)	2019		2018
Interest expense	$	6,229	$	7,938
Amortization of discounts and debt issuance costs		3,955		3,756
Total interest expense	$	10,184	$	11,694

Summary of Future Debt Payment Obligations

The following table summarizes future debt payment obligations as of March 31, 2019:

(In thousands)	Total		Remainder of 2019		2020		2021		2022		2023		Thereafter
1.25% Cash Convertible Senior    Notes (1)	$	345,000	$	0	$	345,000	$	0	$	0	$	0	$	0
Term Loan		345,000		15,000		27,500		30,000		37,500		235,000		0
Revolving Facility (2)		120,000		0		0		0		0		120,000		0
Other debt		952		952		0		0		0		0		0
Total debt	$	810,952	$	15,952	$	372,500	$	30,000	$	37,500	$	355,000	$	0

⁽¹⁾ Assumes no cash conversions of the 1.25% Notes prior to their maturity on July 1, 2020.

⁽²⁾ Assumes no additional borrowings after March 31, 2019, payment of any required periodic installments of principal and that all drawn amounts are repaid upon maturity.

1.25% Cash Convertible Senior Notes [Member]

Debt Instrument [Line Items]

Interest Expense Related to 1.25% Cash Convertible Senior Notes

Interest expense related to the 1.25% Cash Convertible Senior Notes (the “1.25% Notes”), included in the table above, consists of the following:

	Three Months Ended March 31,
(In thousands)	2019		2018
Coupon interest at 1.25%		1,078	$	1,078
Amortization of discounts and debt issuance costs		3,577		3,407
Total interest expense related to the 1.25% Notes	$	4,655	$	4,485