Leases Lease Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 31, 2019	Jul. 31, 2019
Lease Cash flows [Abstract]
Operating Lease, Payments	$ 362	$ 722
Finance Lease, Interest Payment on Liability	6	11
Finance Lease, Principal Payments	104	199
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	208	398
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 0	$ 0