Finance Charges and Other Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Summary of the classification of the amounts as Finance charges and other [Abstract]
Interest and Fee Income, Loans, Consumer	$ 67,131	$ 60,621
Insurance Commissions and Fees	9,330	9,457
Other Revenue, Net	80	493
Finance charges and other	76,541	70,571
Provisions for uncollectible interest	10,000	10,000
Financing Receivable [Member]
Summary of the classification of the amounts as Finance charges and other [Abstract]
Interest and Fee Income, Loans, Consumer	$ 4,500	$ 4,100