Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2020

Stockholders Equity Note [Abstract]

Summary of Changes of Shareholders' Equity (Deficit)

The changes to the Company’s shareholders’ equity during the three months March 31, 2020 is as follows (in thousands, except share data):

							Accumulated
					Additional		Other						Total
	Common Stock				Paid-In		Comprehensive			Accumulated			Shareholders’
	Shares		Amount		Capital		Income (Loss)			Deficit			Equity
Balance at January 1, 2020		77,447,620	$	8	$	976,627	$	(2,719	)	$	(510,194	)	$	463,722
Exercise of stock options		532,848				7,928								7,928
Vesting of restricted stock units		186,475
Stock-based compensation cost						9,749								9,749
Shares issued under employee stock    purchase plan		81,894				5,716								5,716
Shares issued related to business    combination earnouts		44,659				3,750								3,750
Shares issued to purchase intangible    assets		1,191				87								87
Gain on translation adjustment								625						625
Net loss											(15,283	)		(15,283	)
Balance at March 31, 2020		78,294,687	$	8	$	1,003,857	$	(2,094	)	$	(525,477	)	$	476,294

The changes to the Company’s shareholders’ equity for the three months ended March 31, 2019 is as follows (in thousands, except share data):

									Accumulated
						Additional			Other						Total
	Common Stock					Paid-In			Comprehensive			Accumulated			Shareholders’
	Shares			Amount		Capital			Income (Loss)			Deficit			Equity
Balance at January 1, 2019		66,768,563		$	7	$	599,493		$	(2,345	)	$	(487,602	)	$	109,553
Impact of adoption of new accounting    pronouncements - ASC 606 (see Note 2)													27,622			27,622
Exercise of stock options		2,763,291					27,311									27,311
Shares tendered for cashless redemption of    stock-based awards		(2,805	)				(93	)								(93	)
Stock-based compensation cost							6,571									6,571
Shares issued under employee stock    purchase plan		372,764					7,664									7,664
Shares issued to purchase intangible assets		1,634					50									50
Loss on translation adjustment										(462	)					(462	)
Net loss													(10,354	)		(10,354	)
Balance at March 31, 2019		69,903,447		$	7	$	640,996		$	(2,807	)	$	(470,334	)	$	167,862