Leases Lease Cash Flows (Details) $ in Thousands	3 Months Ended
	Apr. 30, 2019 USD ($)
Lease Cash flows [Abstract]
Operating Lease, Payments	$ 360
Finance Lease, Interest Payment on Liability	5
Finance Lease, Principal Payments	95
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	190
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 0