Commitments and Contingencies (Details) - USD ($)	Jul. 01, 2018	Oct. 25, 2013	Jan. 31, 2019	Jan. 31, 2018
Commitments and Contingencies
Minimum fees due under shared office arrangement			$ 286,000
Royalty liability			905,000	$ 2,469,000
Royalty Agreement with Montefiore
Commitments and Contingencies
Term of licensing agreement		15 years
One-time initial base royalty fee		$ 3,000,000
Minimum commitment for additional royalty payments		$ 3,000,000
Period of time over which additional royalty payments are to be made	6 years 6 months
Term of maintenance and service	24 months
Cash payment due per royalty agreement	$ 1,000,000
Deferred revenue			$ 1,172,000