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Earnings per Common Share - (Tables)
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted Net Earnings per Share
 Three Months Ended June 30,Six Months Ended June 30,
(In thousands)2021202020212020
Basic weighted-average common shares outstanding16,685 16,594 16,678 16,575 
Incremental shares due to:
Stock-based awards— 92 — 70 
Diluted weighted-average common shares outstanding16,685 16,686 16,678 16,644 
.