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Commitments and Contingencies - Additional Information (Detail) - USD ($)		12 Months Ended
	Feb. 02, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Business combination, final purchase price		$ 28,100,000
Loss contingency accrual		500,000
Subsequent Event [Member]
Loss Contingencies [Line Items]
Business combination, final purchase price	$ 28,700,000
Minimum [Member]
Loss Contingencies [Line Items]
Business combination, final purchase price		27,900,000
Maximum [Member]
Loss Contingencies [Line Items]
Business combination, final purchase price		$ 29,900,000

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

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