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Equity Compensation Plans (Narrative) (Details)
$ in Thousands
 6 Months Ended
Jun. 30, 2022
USD ($)
item
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of share-based incentive plans (in shares) | item 2
Offering period 6 months
Participants purchase limit shares (in shares) 3,000
2014 Plan  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Common stock reserved for issuance (in shares) 12,899,000
Shares available for future grants (in shares) 1,076,000
Additional shares authorized (in shares) 1,100,000
2008 Employee Stock Purchase Plan  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Common stock reserved for issuance (in shares) 228,000
Company's common stock may be purchased at a discount (percent) 15.00%
Participants purchase limit value | $ $ 25