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Schedule II
 12 Months Ended
Jan. 31, 2018
Valuation and Qualifying Accounts [Abstract]  
Schedule II of Valuation and Qualifying Accounts Disclosure [Text Block]
Schedule II
Perma-Pipe International Holdings, Inc. and Subsidiaries
VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended January 31, 2018 and 2017
(In thousands)
Balance at beginning of period
Charged to costs and expenses
Deductions from reserves (1)
Charged to other accounts (2)
Balance at end of period
Year Ended January 31, 2018
 
 
 
 
 
Allowance for possible losses in collection of trade receivables
$305
$247
$135
$52
$469
 
 
 
 
 
 
Year Ended January 31, 2017
 
 
 
 
 
Allowance for possible losses in collection of trade receivables
$33
$246
$1
$27
$305


(1) Uncollectible accounts charged off

(2) Primarily related to recoveries from accounts previously charged off and currency translation