Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Summary of Debt

The following table presents outstanding debt balances as of December 31, 2019 and 2018.

	As of December 31,
	2019		2018
Senior Secured Term Loan	$	526,313	$	532,063
Incremental Term Loan	257,111		279,000
Senior Secured Revolver	—		38,720
International lines of credit and other loans	9,823		9,810
Total principal	793,247		859,593
Less-current maturities of long-term debt	19,160		31,280
Principal, net of current portion	774,087		828,313
Less-unamortized debt issuance costs (1)	16,647		16,842
Long-term debt, net of current portion	$	757,440	$	811,471

Aggregate Maturities of Long-Term Debt

The following table lists aggregate maturities of long-term debt for the next five years and thereafter.

Year Ending December 31,	Aggregate Maturities Principal Amounts
2020	$	19,160
2021	18,777
2022	749,162
2023	1,274
2024	1,073
Thereafter	3,801
Total outstanding principal	$	793,247