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Earnings per Common Share - Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted Net Earnings Per Share (Detail) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted Average Number of Shares Outstanding, Basic 16,728 16,647
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 229 238
Weighted Average Number of Shares Outstanding, Diluted 17,073 16,979
Anti-dilutive shares excluded from calculation 400 200
Performance Shares [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 116 94