Restructuring - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Dec. 30, 2016
Restructuring Cost And Reserve [Line Items]
Restructuring, initiation date	Mar. 08, 2016
Restructuring, estimated completion date	Dec. 30, 2016
Cash lease payment obligation	$ 4.3
Workforce Reduction [Member]
Restructuring Cost And Reserve [Line Items]
Percentage of workforce reduced	19.00%
Cost incurred related to workforce reduction	$ 0.5
Workforce Reduction [Member] \| Scenario, Forecast [Member]
Restructuring Cost And Reserve [Line Items]
Estimated restructuring expenses		$ 1.7

Percentage of workforce reduced.

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- Definition

The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
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- Definition

Date the exit and disposal activities were completed or are expected to be completed, in CCYY-MM-DD format.

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Date the restructuring activities were initiated or are expected to be initiated, in CCYY-MM-DD format.

+ References

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- Definition

Amount expected to be recognized in earnings for the specified restructuring cost.

+ References

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-Name Staff Accounting Bulletin (SAB)
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No definition available.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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