Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Measurements

Schedule of classified liabilities measured at fair value on recurring basis

	Fair Value Measurement
	at Reporting Date Using
							Balance as of
	Level 1		Level 2		Level 3		March 31, 2020
Liabilities
Acquisition-related contingent consideration - long-term	$	—	$	—	$	11,500	$	11,500

	Fair Value Measurement
	at Reporting Date Using
							Balance as of
	Level 1		Level 2		Level 3		December 31, 2019
Liabilities
Acquisition-related contingent consideration - long-term	$	—	$	—	$	10,800	$	10,800

Schedule of reconciliation of liability measured at fair value on recurring basis using significant unobservable inputs (Level 3)

Balance at December 31, 2019	$	10,800
Adjustments to fair value measurement		700
Balance at March 31, 2020	$	11,500

Schedule of carrying value and fair value of financial instruments

	Face Value		Carrying Value		Fair Value
1.75% Convertible Senior Subordinated Notes due 2026 (the "2026 Notes")	$	325,000	$	229,442	$	322,667