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Business Segment and Geographic Information (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Apr. 12, 2016 segment | Apr. 30, 2016 segment | Dec. 31, 2016 USD ($) | Oct. 01, 2016 USD ($) | Jul. 02, 2016 USD ($) | Apr. 02, 2016 USD ($) | Jan. 02, 2016 USD ($) | Oct. 03, 2015 USD ($) | Jul. 04, 2015 USD ($) | Apr. 04, 2015 USD ($) | Jul. 02, 2016 segment | Dec. 31, 2016 USD ($) segment | Dec. 31, 2016 USD ($) | Jan. 02, 2016 USD ($) segment | Jan. 03, 2015 USD ($)
Business segment and geographic information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of business segments | segment | 2 | 2 |  |  |  |  |  |  |  |  | 2 | 1 |  | 2 |
Revenues |  |  | $ 79,569 | $ 81,691 | $ 82,607 | $ 80,912 | $ 72,460 | $ 76,525 | $ 76,535 | $ 78,039 |  |  | $ 324,779 | $ 303,559 | $ 306,371
Long-lived assets (property and equipment, net) |  |  | 36,381 |  |  |  | 31,338 |  |  |  |  | $ 36,381 | 36,381 | 31,338 |
United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business segment and geographic information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  | 251,962 | 243,261 | 238,466
Long-lived assets (property and equipment, net) |  |  | 30,735 |  |  |  | 29,877 |  |  |  |  | 30,735 | 30,735 | 29,877 |
United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business segment and geographic information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  | 52,509 | 44,248 | 49,127
Long-lived assets (property and equipment, net) |  |  | 5,253 |  |  |  | 1,075 |  |  |  |  | 5,253 | 5,253 | 1,075 |
Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business segment and geographic information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  | 20,308 | 16,050 | 18,778
Long-lived assets (property and equipment, net) |  |  | 393 |  |  |  | 386 |  |  |  |  | 393 | 393 | 386 |
Total foreign |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business segment and geographic information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  | 72,817 | 60,298 | $ 67,905
Long-lived assets (property and equipment, net) |  |  | $ 5,646 |  |  |  | $ 1,461 |  |  |  |  | $ 5,646 | $ 5,646 | $ 1,461 |

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