Acquisitions and Divestitures - Assets Acquired and Liabilities Assumed (Details) - USD ($)		12 Months Ended
	Sep. 08, 2016	Jan. 31, 2018	Jan. 31, 2017
Liabilities assumed:
Cash paid		$ 0	$ 1,400,000
Opportune IT
Assets purchased:
Accounts receivable	$ 792,000
Other assets	32,000
Total assets purchased	1,824,000
Liabilities assumed:
Accounts payable and accrued liabilities	424,000
Net assets acquired	1,400,000
Cash paid	1,400,000
Internally-developed software | Opportune IT
Assets purchased:
Intangible assets	350,000	$ 350,000
Intangible assets | Opportune IT
Assets purchased:
Intangible assets	$ 650,000