Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Schedule of Common Stock Reserved for Future Issuance

At December 31, 2021, we had reserved shares of common stock for future issuance under equity compensation plans as follows:

In thousands:	Securities To Be Issued Upon Exercise Of Options	Securities To Be Issued Upon Release Of Restricted Stock and Performance Share Units at Maximum	Number Of Remaining Securities Available For Future Issuance
2011 Equity Incentive Plan	1,429	7,512	3,519
DVS Sciences Inc. 2010 Equity Incentive Plan	9	—	—
2017 Inducement Award Plan	159	76	—
2017 Employee Stock Purchase Plan	—	—	2,633
	1,597	7,588	6,152

Total stock-based compensation expense recognized was as follows (in thousands):

	For the Year Ended December 31,
	2021		2020		2019
Restricted stock units, stock options and performance share units	$	15,470	$	13,428	$	10,555
Employee stock purchase plan	631		1,023		838
Total stock-based compensation	$	16,101	$	14,451	$	11,393