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Shareholders' Equity
 3 Months Ended
Mar. 31, 2022
Equity [Abstract]  
Shareholders' Equity Shareholders’ Equity
Common Shares Reserved
As of March 31, 2022, we had reserved shares of common stock for future issuance under equity compensation plans as follows:
In thousandsSecurities To Be Issued Upon Exercise Of Options Securities To Be Issued Upon Release Of Restricted Stock and Performance Share Units at MaximumNumber Of Remaining Securities Available For Future Issuance
2011 Equity Incentive Plan1,376 7,259 3,561 
DVS Sciences Inc. 2010 Equity Incentive Plan6 — — 
2017 Inducement Award Plan159 57 — 
2017 Employee Stock Purchase Plan— — 2,633 
1,541 7,316 6,194 
Included in the securities to be issued upon release of RSUs and PSUs are the maximum number of shares that could be issued for performance share unit awards, which can vest at 0%-200% of the number of awards granted. The number of shares available for future issuance also reflects PSU awards granted at the maximum number of shares that could be issued under these awards.