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Inventories - Summary of Detailed Information About Inventories (Detail) - CAD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Classes of current inventories [abstract]      
Direct materials $ 87,331 $ 83,943 $ 119,342
Repair and distribution parts 58,056 54,156 52,125
Work-in-progress 47,056 31,298 25,185
Equipment 3,116 3,290 15,599
Total inventories 195,559 172,687 212,251
Work-in-progress related to finance leases $ 32,377 $ 36,169 $ 0