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Leases - Maturities of Operating Lease Liabilities (Details) $ in Thousands	Jan. 31, 2020 USD ($)
Leases [Abstract]
2020	$ 8,743
2021	7,834
2022	7,096
2023	6,512
2024	6,187
Thereafter	23,663
Total operating lease payments	60,035
Less imputed interest	14,330
Present value of lease liabilities	$ 45,705

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Amount of lessee's undiscounted obligation for lease payments for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.

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-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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