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Earnings per Common Share - (Tables)
3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted Net Earnings per Share
 Quarter Ended March 31,
(In thousands)20222021
Basic weighted-average common shares outstanding16,728 16,647 
Incremental shares due to:
Stock-based awards229 238 
Performance shares116 94 
Diluted weighted-average common shares outstanding17,073 16,979