Leases (Details) $ in Millions	3 Months Ended
	Apr. 30, 2019 USD ($)
Lessee, Operating Lease, Description [Abstract]
Transition package	true
Hindsight practical expedient	false
Option to extend	true
Lessee, operating lease, option to terminate	The exercise of lease renewal and termination options are generally at the Company's sole discretion.
Option to terminate exist	true
Variable and short term cost	$ 2.2
Minimum
Lessee, Operating Lease, Description [Abstract]
Operating lease, contract term	1 year
Renewal term	1 year
Maximum
Lessee, Operating Lease, Description [Abstract]
Operating lease, contract term	10 years
Renewal term	10 years