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Business Combination Purchase Price Allocation (Details) - USD ($)
$ in Thousands
Feb. 28, 2017
Feb. 29, 2016
Vogel Capital Inc. d/b/a Diamond Machining Technology    
Assets:    
Accounts receivable   $ 1,145
Inventory   280
Equipment   262
Prepaid expenses   176
Intangible assets   5,481
Total assets   7,344
Liabilities:    
Accounts payable   192
Accrued expense   181
Total liabilities   $ 373
Spill Magic    
Assets:    
Accounts receivable $ 684  
Inventory 453  
Equipment 296  
Intangible assets 5,800  
Total assets $ 7,233