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Fair Value - Additional Information (Detail) $ in Millions	6 Months Ended
	Aug. 03, 2019 USD ($) yr
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Fair value assumptions | yr	7
Measurement Input, Discount Rate [Member] | Minimum [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Fair value assumptions	2.68
Measurement Input, Discount Rate [Member] | Maximum [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Fair value assumptions	4.9
Contingent Earn Out Liability [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Estimated earnout targets	$ 0.5
Estimated earnout targets	$ 1.4
Contingent Earn Out Liability [Member] | Minimum [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Probability of success	0.00%
Contingent Earn Out Liability [Member] | Maximum [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Probability of success	0.90%

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- Definition

Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]

+ References

No definition available.

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Probability of success.

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- Definition

This element represents the amount of any change recognized during the period in the high-end of the estimated range of outcomes (undiscounted) of a liability assumed in a business combination arising from an item of contingent consideration.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

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- Definition

This element represents the amount of any change recognized during the period in the low-end of the estimated range of outcomes (undiscounted) of a liability assumed in a business combination arising from an item of contingent consideration.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

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- Definition

Value of input used to measure contingent consideration liability from business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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