Acquisitions - Additional Information (Detail) $ / shares in Units, $ in Thousands			12 Months Ended
	Jul. 31, 2018 USD ($) $ / shares shares	Apr. 30, 2018 USD ($)	Feb. 28, 2019 USD ($) $ / shares	Dec. 31, 2016 USD ($)	Feb. 28, 2018 $ / shares	Jul. 07, 2017 USD ($)	Jan. 27, 2017 USD ($) Location Facility
Business Acquisition [Line Items]
Percentage of assets acquired and liabilities assumed at their acquisition date fair values			100.00%
Common stock, par value | $ / shares			$ 2.50		$ 2.50
Wright Business Graphics, Inc [Member]
Business Acquisition [Line Items]
Issuance of common stock in connection with merger, shares | shares	829,126
Common stock, par value | $ / shares	$ 2.50
Business acquisition, date of acquisition	Jul. 16, 2018
Issuance of common stock in connection with merger, value	$ 16,218
Cash paid for final working capital adjustment in connection with merger	19,700
Business acquisition payment for outstanding debt	3,000
Acquisition related costs incurred			$ 200
Net sales	58,000
Total purchase consideration	$ 38,871
Tag and Label Company [Member]
Business Acquisition [Line Items]
Total purchase consideration		$ 4,700
Contingent consideration payable, period		3 years
Tag and Label Company [Member] | Maximum [Member]
Business Acquisition [Line Items]
Contingent consideration payable		$ 500,000
Tag Company [Member]
Business Acquisition [Line Items]
Total purchase consideration						$ 1,400
Independent Printing Company, Inc. [Member]
Business Acquisition [Line Items]
Net sales				$ 37,000
Total purchase consideration							$ 17,677
Number of location | Location							4
Number of folder facilities | Facility							4