Financial Commitments (Tables)

6 Months Ended

Jun. 30, 2019

Financial Commitments [Abstract]

Long-term Debt

	As of June 30,		As of December 31,
(in thousands)	2019		2018
2017 Senior Notes	$	493,935	$	493,521
2017 Credit Facility		235,000		41,000
Convertible Notes		176,760		171,481
Equipment financing and mortgages		42,961		50,904
Other indebtedness		7,521		4,598
Total debt		956,177		761,504
Less: Current maturities		14,414		16,767
Long-term debt, net	$	941,763	$	744,737

Reconciliation Of Outstanding Debt Balance To Reported Debt Balance

	As of June 30, 2019						As of December 31, 2018
(in thousands)	Outstanding Long-Term Debt		Unamortized Discount and Issuance Costs		Long-Term Debt, as reported		Outstanding Long-Term Debt		Unamortized Discount and Issuance Costs		Long-Term Debt, as reported
2017 Senior Notes	$	500,000	$	(6,065)	$	493,935	$	500,000	$	(6,479)	$	493,521
Convertible Notes		200,000		(23,240)		176,760		200,000		(28,519)		171,481

Summary Of Interest Expense As Reported In The Condensed Consolidated Statements of Income

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(in thousands)	2019		2018		2019		2018
Cash interest expense:
Interest on 2017 Senior Notes	$	8,594	$	8,594	$	17,187	$	17,187
Interest on 2017 Credit Facility		3,682		2,354		6,327		3,704
Interest on Convertible Notes		1,438		1,437		2,875		2,875
Other interest		541		626		1,116		1,383
Total cash interest expense		14,255		13,011		27,505		25,149
Non-cash interest expense:(a)
Amortization of discount and debt issuance costs on Convertible Notes		2,671		2,432		5,279		4,808
Amortization of debt issuance costs on 2017 Credit Facility		387		360		749		720
Amortization of debt issuance costs on 2017 Senior Notes		209		195		414		386
Total non-cash interest expense		3,267		2,987		6,442		5,914
Total interest expense	$	17,522	$	15,998	$	33,947	$	31,063

(a)The combination of cash and non-cash interest expense produces effective interest rates that are higher than contractual rates. Accordingly, the effective interest rates for the 2017 Senior Notes and the Convertible Notes were 7.13% and 9.39%, respectively, for the six months ended June 30, 2019.