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Consolidated Statements of Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Balance at Jan. 31, 2017   $ 253,242 $ 448,597 $ (32,779) $ (238,465)
Stock options and share units exercised   1,294      
Issuance of common shares, net of issuance costs (Note 15)        
Acquisitions (Note 3)   20,000      
Balance at Jan. 31, 2018 $ 498,812 274,536 451,151 (15,252) (211,623)
Stock-based compensation expense (Note 17)     2,807    
Stock options and share units exercised     (290)    
Other comprehensive income (loss), net of income taxes       17,527  
Net income 26,879       26,879
Cumulative adjustment upon modified retrospective accounting policy adoption (Note 2)     37   (37)
Stock options and share units exercised   681      
Issuance of common shares, net of issuance costs (Note 15)        
Acquisitions (Note 3)   1,536      
Balance at Jan. 31, 2019 533,507 276,753 454,722 (25,201) (172,767)
Stock-based compensation expense (Note 17)     3,710    
Stock options and share units exercised     (139)    
Other comprehensive income (loss), net of income taxes       (9,949)  
Net income 31,277       31,277
Cumulative adjustment upon modified retrospective accounting policy adoption (Note 2)       7,579
Stock options and share units exercised   1,788      
Issuance of common shares, net of issuance costs (Note 15)   236,568      
Acquisitions (Note 3)   9,045      
Balance at Jan. 31, 2020 821,709 $ 524,154 459,269 (25,944) (135,770)
Stock-based compensation expense (Note 17)     4,909    
Stock options and share units exercised     (362)    
Other comprehensive income (loss), net of income taxes       $ (743)  
Net income $ 36,997       36,997
Cumulative adjustment upon modified retrospective accounting policy adoption (Note 2)