Concentration of Credit Risks - Additional Information (Detail) - Customer	12 Months Ended
Dec. 30, 2017	Dec. 31, 2016
Concentration Risk [Line Items]
Number of major customers	3	3
Sales percentage by customer percentage maximum (no more than)	5.00%
Accounts Receivable
Concentration Risk [Line Items]
Major customer, accounted percentage	26.98686%	34.30%
Total Revenues
Concentration Risk [Line Items]
Major customer, accounted percentage	45.80%	46.10%
Customer Concentration Risk \| Total Revenues \| UNITED STATES
Concentration Risk [Line Items]
Number of separate customers	2
Customer Concentration Risk \| Total Revenues \| Minimum
Concentration Risk [Line Items]
Major customer, accounted percentage	10.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

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