Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Carrying and Estimated Fair Value of Other Financial Instruments

The table below presents the carrying amounts and estimated fair values of our financial instruments by hierarchy level as of September 30, 2021 and December 31, 2020:

	September 30, 2021
			Hierarchy Level (Fair Value)
	Carrying Amount		Level 1		Level 2		Level 3
Liabilities
Acquisition-related contingent consideration, including current portion (1)(2)	$	14,568	$	—	$	—	$	14,568
2023 Convertible Notes (3)	294,355		—		444,957		—
Total	$	308,923	$	—	$	444,957	$	14,568

	December 31, 2020
			Hierarchy Level (Fair Value)
	Carrying Amount		Level 1		Level 2		Level 3
Liabilities
Acquisition-related contingent consideration, including current portion (1)(2)	$	20,118	$	—	$	—	$	20,118
2023 Convertible Notes (3)	286,131		—		396,982		—
Total	$	306,249	$	—	$	396,982	$	20,118

(1)The short-term portion is included in “Accounts payable, accrued expenses and other” and the long-term portion is included in “Other liabilities” on the Condensed Consolidated Balance Sheets.

(2)During the nine months ended September 30, 2021, we acquired certain assets of a business and recorded an acquisition-related contingent consideration liability.

(3)The carrying values include unamortized deferred debt issue costs and debt discount.

Schedule of Acquisition-Related Contingent Consideration

The table below presents the change in our liability for acquisition-related contingent consideration for our Level 3 financial instruments:

	Contingent Consideration
Balance at December 31, 2020	$	20,118
Accretion expense (1)	1,289
Payments	(1,000)
Foreign currency translation adjustment (2)	(612)
Balance at March 31, 2021	$	19,795
Additions	1,093
Accretion expense (1)	676
Payments	(4,122)
Foreign currency translation adjustment (2)	264
Remeasurement gain (3)	(3,095)
Balance at June 30, 2021	$	14,611
Accretion expense (1)	116
Foreign currency translation adjustment (2)	(159)
Balance at September 30, 2021	$	14,568

	Contingent Consideration
Balance at December 31, 2019	$	14,826
Accretion expense (1)	506
Foreign currency translation adjustment (2)	(148)
Balance at March 31, 2020	$	15,184
Accretion expense (1)	614
Payments	(4,692)
Foreign currency translation adjustment (2)	88
Balance at June 30, 2020	$	11,194
Additions	3,460
Accretion expense (1)	3,532
Foreign currency translation adjustment (2)	359
Balance at September 30, 2020	$	18,545

(1)Accretion expense is included in SG&A expenses on the Condensed Consolidated Statements of Comprehensive Income.

(2)Foreign currency translation adjustments are included in "Other comprehensive income (loss), net of tax" on the Condensed Consolidated Statements of Comprehensive Income.

(3)Remeasurement gain or loss resulting from a change in the fair value of an acquisition's contingent consideration liability is recorded in SG&A expenses on the Condensed Consolidated Statements of Comprehensive Income.