Commitments and Contingencies - Future Minimum Lease Payments under Non-cancellable Capital and Operating Leases (Details) $ in Thousands	Oct. 31, 2018 USD ($)
Capital Leases
Capital Leases, Remainder of 2019	$ 8,799
Capital Leases, 2020	21,979
Capital Leases, 2021	17,794
Capital Leases, 2022	9,740
Capital Leases, 2023	2,376
Capital Leases, Total minimum lease payments	60,688
Capital Leases, Less: amount representing interest	(2,438)
Capital Leases, Present value of minimum lease payments	58,250
Operating Leases
Operating Leases, net of Sublease Income, Remainder of 2019	8,764
Operating Leases, net of Sublease Income, 2020	35,221
Operating Leases, net of Sublease Income, 2021	35,907
Operating Leases, net of Sublease Income, 2022	34,146
Operating Leases, net of Sublease Income, 2023	26,361
Operating Leases, net of Sublease Income, Thereafter	142,922
Operating Leases, net of Sublease Income, Total minimum lease payments	$ 283,321

Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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Amount of minimum lease payments for capital leases due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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