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Operations in Different Geographic Areas (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 30, 2016 | Sep. 30, 2016 | Jul. 01, 2016 | Apr. 01, 2016 | Jan. 01, 2016 | Oct. 02, 2015 | Jul. 03, 2015 | Apr. 03, 2015 | Dec. 30, 2016 | Jan. 01, 2016 | Jan. 02, 2015
Operations in Different Geographic Areas [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Equipment and Leasehold Improvements, net |  | $ 36,710 |  |  |  | $ 28,485 |  |  |  | $ 36,710 |  | $ 28,485 |  |  |
Revenues |  | 77,013 | $ 77,612 | $ 77,295 | $ 83,156 | 73,681 | $ 78,994 | $ 79,864 | $ 80,293 | 315,076 | [1] | 312,832 | [1] | $ 304,704 | [1]
United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operations in Different Geographic Areas [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Equipment and Leasehold Improvements, net |  | 35,746 |  |  |  | 27,775 |  |  |  | 35,746 |  | 27,775 |  |  |
Revenues | [1] |  |  |  |  |  |  |  |  | 281,223 |  | 281,618 |  | 273,635 |
Foreign Countries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operations in Different Geographic Areas [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Equipment and Leasehold Improvements, net |  | $ 964 |  |  |  | $ 710 |  |  |  | 964 |  | 710 |  |  |
Revenues | [1] |  |  |  |  |  |  |  |  | $ 33,853 |  | $ 31,214 |  | $ 31,069 |
[1] | Geographic revenues are allocated based on the location of the client.

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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(14)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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