Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of Components of Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss, net of tax, for the years ended December 31, 2021, 2020, and 2019 are as follows (in thousands):

	Foreign Currency Translation Adjustment		Unrealized Gain (Loss) on Investments		Accumulated Other Comprehensive Income (Loss)
Ending balance at December 31, 2019	$	(618)	$	36	$	(582)
Change during the year	730		(36)		694
Ending balance at December 31, 2020	112		—		112
Change during the year	(1,019)		—		(1,019)
Ending balance at December 31, 2021	(907)		$	—	$	(907)

Schedule of Potential Common Shares Excluded from Computations of Net Loss Per Share Attributed to Common Stockholders

The following potentially dilutive common shares were excluded from the computations of diluted net loss per share for the periods presented because including them would have been anti-dilutive (in thousands):

	December 31,
	2021	2020	2019
Stock options, restricted stock units and performance stock awards	7,975	7,507	5,189
2019 Convertible Notes	18,966	18,966	18,966
2019 Convertible Notes potential make-whole shares	1,337	837	3,182
2014 Convertible Notes	10	19	19
Total	28,288	27,329	27,356