Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Schedule of long-term debt and long-term debt payable to related parties

Long-term debt consisted of the following (in thousands):

	December 31,
	2020		2019
6.125% Senior Notes	$	542,772	$	540,377
Credit Facility	137,613		48,917
Total	$	680,385	$	589,294

The carrying amount of the 6.125% Senior Notes was determined as follows (in thousands):

	December 31,
	2020		2019
Principal balance	$	550,000	$	550,000
Less: debt issue cost	3,688		4,972
Less: debt discount	3,540		4,651
Total	$	542,772	$	540,377

Interest expense, amortization of debt issue costs and amortization of the debt discount of the 6.125% Senior Notes, included in “Interest (expense) income, net” on the accompanying consolidated statements of operations, were as follows (in thousands):

	Year Ended December 31,
	2020		2019		2018
Interest expense	$	33,687	$	34,730	$	5,300
Debt issue cost amortization	1,284		1,282		198
Debt discount amortization	1,111		565		47
Total	$	36,082	$	36,577	$	5,545

Details of the Credit Facility are as follows (in thousands):

	December 31,
	2020		2019
Principal balance	$	140,000	$	50,000
Less: Debt issue cost	2,387		1,083
Total	$	137,613	$	48,917

Interest expense and amortization of debt issue costs of the Credit Facility, included in “Interest (expense) income, net” on the accompanying consolidated statements of operations, were as follows (in thousands):

	Year Ended December 31,
	2020		2019		2018
Interest expense	$	6,618	$	1,865	$	—
Debt issue cost amortization	1,012		565		47
Unused facility fee	354		627		71
Total	$	7,984	$	3,057	$	118

Long-term debt consisted of the following (in thousands):

	December 31,
	2020		2019
6.125% Senior Notes	$	542,772	$	540,377
Credit Facility	137,613		48,917
Total	$	680,385	$	589,294

The carrying amount of the 6.125% Senior Notes was determined as follows (in thousands):

	December 31,
	2020		2019
Principal balance	$	550,000	$	550,000
Less: debt issue cost	3,688		4,972
Less: debt discount	3,540		4,651
Total	$	542,772	$	540,377

Interest expense, amortization of debt issue costs and amortization of the

debt discount of the 6.125% Senior Notes, included in “Interest (expense) income, net” on the accompanying consolidated statements of operations, were as follows (in thousands):

	Year Ended December 31,
	2020		2019		2018
Interest expense	$	33,687	$	34,730	$	5,300
Debt issue cost amortization	1,284		1,282		198
Debt discount amortization	1,111		565		47
Total	$	36,082	$	36,577	$	5,545

Details of the Second Amended Credit Facility are as follows (in thousands):

	December 31,
	2020		2019
Principal balance	$	140,000	$	50,000
Less: Debt issue cost	2,387		1,083
Total	$	137,613	$	48,917

Interest expense and amortization of debt issue costs of the Credit Facility, included in “Interest (expense) income, net” on the accompanying consolidated statements of operations, were as follows (in thousands):

	Year Ended December 31,
	2020		2019		2018
Interest expense	$	6,618	$	1,865	$	—
Debt issue cost amortization	1,012		565		47
Unused facility fee	354		627		71
Total	$	7,984	$	3,057	$	118