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Summary of Significant Accounting Policies (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Text Block [Abstract] |  |
Summary of Property, Plant And Equipment |  |
Asset Class |  | Estimated Useful Life Range
Buildings |  | 5 to 20 years
Equipment |  | 2 to 20 years
Summary of reclassification | These reclassifications are summarized in the tables below:
Excerpt from unaudited interim condensed consolidated statements of earnings for the three months ended March 31, 2021 ($ Canadian thousands) |  | As previously reported |  |  | Reclassification |  |  | Revised |
Revenue |  | $ | 203,205 |  |  | $ | — |  |  | $ | 203,205 |
COGS |  |  | 153,657 |  |  |  | 4,072 |  |  |  | 157,729 |
Gross margin |  |  | 49,548 |  |  |  | (4,072 | ) |  |  | 45,476 |
SG&A |  |  | 42,527 |  |  |  | (4,072 | ) |  |  | 38,455 |
Net earnings |  |  | 3,003 |  |  |  | — |  |  |  | 3,003 |
Excerpt from consolidated statements of earnings for the year ended December 31, 2021 ($ Canadian thousands) |  | As previously reported |  |  | Q1 2021 Reclass |  |  | Q2 2021 Reclass |  |  | Q3 2021 Reclass |  |  | Q4 2021 Reclass |  |  | Revised |
Revenue |  | $ | 960,156 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  | $ | 960,156 |
COGS |  |  | 740,602 |  |  |  | 4,072 |  |  |  | 4,577 |  |  |  | 4,105 |  |  |  | 4,578 |  |  |  | 757,934 |
Gross margin |  |  | 219,554 |  |  |  | (4,072 | ) |  |  | (4,577 | ) |  |  | (4,105 | ) |  |  | (4,578 | ) |  |  | 202,222 |
SG&A |  |  | 165,263 |  |  |  | (4,072 | ) |  |  | (4,577 | ) |  |  | (4,105 | ) |  |  | (4,578 | ) |  |  | 147,931 |
Net earnings |  |  | (18,455 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (18,455 | )

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