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Equity (Tables)

3 Months Ended

Mar. 31, 2021

Summary of changes in Shareholders' Equity

The changes in shareholders’ equity for three months ended March 31, 2021 were as follows:


						Additional						Total
	Common Stock					Paid- In			Accumulated			Shareholders’
	Shares			Amount		Capital			Deficit			Equity (Deficit)
Balance, December 31, 2020	34,612,054		$	35		$	519,143		$	(333,147)		$	186,031
Cumulative effect adjustment for adoption of ASU 2020-06	—			—			(44,777)			5,288			(39,489)
Exercise of common stock options	289,164			—			4,102			—			4,102
Issuance for employee stock purchase plan	24,630			—			358			—			358
Vesting of restricted stock units ("RSUs") and performance share units ("PSUs")	413,538			—			—			—			—
Shares withheld for employee taxes upon vesting of RSUs and PSUs	(135,562)			—			(3,508)			—			(3,508)
Stock-based compensation	—			—			6,879			—			6,879
Net income	—			—			—			15,662			15,662
Balance, March 31, 2021	35,203,824		$	35		$	482,197		$	(312,197)		$	170,035

The changes in shareholders’ equity for three months ended March 31, 2020 were as follows:


						Additional						Total
	Common Stock					Paid- In			Accumulated			Shareholders’
	Shares			Amount		Capital			Deficit			Equity (Deficit)
Balance, December 31, 2019	33,678,840		$	34		$	447,297		$	(359,899)		$	87,432
Exercise of common stock options	455,573			—			4,454			—			4,454
Issuance for employee stock purchase plan	39,411			—			357			—			357
Vesting of RSUs	195,280			—			—			—			—
Shares withheld for employee taxes upon vesting of RSUs	(63,064)			—			(1,358)			—			(1,358)
Stock-based compensation	—			—			4,951			—			4,951
Equity component of 2020 Convertible Notes, net of issuance costs of $1,773	—			—			44,777			—			44,777
Net income	—			—			—			450			450
Balance, March 31, 2020	34,306,040		$	34		$	500,478		$	(359,449)		$	141,063