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Consolidated Statements of Shareholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Retained Earnings [Member]
Total
Balance at Jan. 31, 2018 $ 274,536 $ 451,151 $ (15,252)   $ (211,623)  
Stock options and share units exercised 681 (139)        
Issuance of common shares, net of issuance costs (Note 15)          
Acquisitions (Note 3) 1,536          
Stock-based compensation expense (Note 17)   3,710        
Other comprehensive income (loss), net of income taxes     (9,949)      
Net income         31,277 $ 31,277
Balance at Jan. 31, 2019 276,753 454,722 (25,201) $ 7,579 (172,767) 533,507
Stock options and share units exercised 1,788 (362)        
Issuance of common shares, net of issuance costs (Note 15) 236,568          
Acquisitions (Note 3) 9,045          
Stock-based compensation expense (Note 17)   4,909        
Other comprehensive income (loss), net of income taxes     (743)      
Net income         36,997 36,997
Balance at Jan. 31, 2020 524,154 459,269 (25,944) (135,770) 821,709
Stock options and share units exercised 7,671 (1,480)        
Issuance of common shares, net of issuance costs (Note 15)          
Acquisitions (Note 3)          
Stock-based compensation expense (Note 17)   6,313        
Other comprehensive income (loss), net of income taxes     24,755      
Net income         52,100 52,100
Balance at Jan. 31, 2021 $ 531,825 $ 464,102 $ (1,189) $ (83,670) $ 911,068