Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jan. 31, 2019

Accounting Policies [Abstract]

Estimated useful lives used for computing depreciation

The estimated useful lives used for computing depreciation are as follows:

Building and improvements	15 - 39 years
Manufacturing equipment by segment
Applied Technology	3 - 5 years
Engineered Films	5 - 12 years
Aerostar	3 - 5 years
Furniture, fixtures, office equipment, and other	3 - 7 years

Operating expenses classification within income statement

The primary types of operating expenses are classified in the income statement as follows:

Cost of sales	Research and development (R&D) expenses	Selling, general, and administrative (SG&A)expenses
Direct material costs Material acquisition and handling costs Direct labor Factory overhead including depreciation and amortization Inventory obsolescence Product warranties Shipping and handling cost	Personnel costs Professional service fees Material and supplies Facility allocation	Personnel costs Professional service fees Advertising Promotions Information technology equipment depreciation Office supplies Facility allocation Bad debt expense