Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2022

Summary of Reconciliation of Changes in Stockholders' Equity

Reconciliation of the changes in stockholders' equity for the three and six months ended June 30, 2022 and 2021
	Common Stock					Additional Paid-in			Accumulated Other Comprehensive			Accumulated
	Shares			Amount		Capital			Loss			Deficit			Total
Balance at December 31, 2021		72,069		$	—	$	511,063		$	(10,077	)	$	(120,453	)	$	380,533
Common stock issued upon exercise of options		2			—		15			—			—			15
Vesting of restricted stock and performance stock units		352			—		—			—			—			—
Purchase and retirement of common shares		(116	)		—		(1,049	)		—			—			(1,049	)
Stock-based compensation		—			—		3,524			—			—			3,524
Net loss		—			—		—			—			(19,967	)		(19,967	)
Currency translation adjustments		—			—		—			1,756			—			1,756
Unrealized gain on marketable securities		—			—		—			74			—			74
Balance at March 31, 2022		72,307		$	—	$	513,553		$	(8,247	)	$	(140,420	)	$	364,886
Vesting of restricted stock and performance stock units		407			—		—			—			—			—
Purchase and retirement of common shares		(142	)		—		(905	)		—			—			(905	)
Stock-based compensation		—			—		3,280			—			—			3,280
Net loss		—			—		—			—			(18,802	)		(18,802	)
Currency translation adjustments		—			—		—			(4,349	)		—			(4,349	)
Unrealized gain on marketable securities		—			—		—			82			—			82
Balance at June 30, 2022		72,572		$	—	$	515,928		$	(12,514	)	$	(159,222	)	$	344,192

	Common Stock					Additional Paid-in			Accumulated Other Comprehensive			Accumulated
	Shares			Amount		Capital			Loss			Deficit			Total
Balance at December 31, 2020		71,738		$	—	$	505,123		$	(9,097	)	$	(97,455	)	$	398,571
Common stock issued upon exercise of options		11			—		92			—			—			92
Vesting of restricted stock and performance stock units		318			—					—			—			—
Purchase and retirement of common shares		(111	)		—		(1,730	)		—			—			(1,730	)
Stock-based compensation		—			—		1,464			—			—			1,464
Net income		—			—		—			—			3,774			3,774
Currency translation adjustments		—			—		—			1,352			—			1,352
Unrealized gain on marketable securities		—			—		—			21			—			21
Balance at March 31, 2021		71,956		$	—	$	504,949		$	(7,724	)	$	(93,681	)	$	403,544
Common stock issued upon exercise of options		3			—		29			—			—			29
Vesting of restricted stock and performance stock units		64			—		—			—			—			—
Purchase and retirement of common shares		(15	)		—		(147	)		—			—			(147	)
Stock-based compensation		—			—		1,473			—			—			1,473
Net loss		—			—		—			—			(1,364	)		(1,364	)
Currency translation adjustments		—			—		—			1,403			—			1,403
Unrealized loss on marketable securities		—			—		—			(122	)		—			(122	)
Balance at June 30, 2021		72,008		$	—	$	506,304		$	(6,443	)	$	(95,045	)	$	404,816

Summary of Company's Stock Option Activity

The following table summarizes the stock option activity for the six months ended June 30, 2022:

	Options
Outstanding on January 1, 2022		1,410
Granted		589
Exercised		(2	)
Expired		(20	)
Forfeited		(173	)
Outstanding on June 30, 2022		1,804

Summary of Time-Vested Restricted Stock Award and Restricted Stock Units Activity

The following table summarizes time-vested restricted stock award and restricted stock unit activity for the six months ended June 30, 2022:

	Units
Issued and unvested, January 1, 2022		701
Granted		2,782
Vested		(571	)
Forfeited		(249	)
Issued and unvested, June 30, 2022		2,663

Performance Based Restricted Stock Unit [Member]

Summary of Performance Based Restricted Stock Unit Award Activity Under Stock Plan

The following table summarizes the PSU activity for the six months ended June 30, 2022:

	Units
Issued and unvested, January 1, 2022		622
Granted (1)		532
Performance adjustment (2)		36
Vested		(188	)
Forfeited		(171	)
Issued and unvested, June 30, 2022		831

(1) Grant activity for all PSUs disclosed at target

(2) Reflects the performance adjustment based on actual performance measured at the end of the performance period