Nature of Operations - Additional Information (Detail)	6 Months Ended
	Jan. 31, 2018 Site Language Facility
IWCO | Hamburg PA
Nature Of Operations [Line Items]
Number of facilities	2
IWCO | Warminster PA
Nature Of Operations [Line Items]
Number of facilities	1
IWCO | Little Falls MN
Nature Of Operations [Line Items]
Number of facilities	1
IWCO | Chanhassen MN
Nature Of Operations [Line Items]
Number of facilities	3
Moduslink
Nature Of Operations [Line Items]
Number of sites | Site	20
Number of languages | Language	21