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Income Taxes - Components of Income, Provision For and Reconciliation of Tax (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 29, 2018 | Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Income Taxes |  |  |  |  |  |  |  |  |  |  |
Taxable year period (in years) |  |  |  |  |  |  |  |  | 3 years |  |
Gross annual receipts to be maintained |  |  |  |  |  |  |  |  | $ 500,000 |  |
Base erosion tax (in percentage) |  |  |  |  |  |  |  |  | 3.00% |  |
FDII deduction calculated |  |  |  |  |  |  |  |  | $ 100 |  |
Income before provision for income taxes: |  |  |  |  |  |  |  |  |  |  |
U.S. |  |  |  |  |  |  |  |  | 21,118 | $ 12,248 | $ 16,905
Foreign |  |  |  |  |  |  |  |  | 7,815 | 2,916 | 4,984
Income before provision for income taxes and noncontrolling interest | $ 8,331 | $ 4,939 | $ 9,737 | $ 5,926 | $ (898) | $ 5,535 | $ 5,919 | $ 4,608 | 28,933 | 15,164 | 21,889
Currently payable: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 4,015 | 4,515 | (770)
Foreign |  |  |  |  |  |  |  |  | 1,487 | 493 | 664
State |  |  |  |  |  |  |  |  | 1,788 | 804 | (637)
Currently payable |  |  |  |  |  |  |  |  | 7,290 | 5,812 | (743)
Deferred: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | (384) | 1,809 | 5,562
Foreign |  |  |  |  |  |  |  |  | (88) | (85) | 124
State |  |  |  |  |  |  |  |  | (357) | (73) | 2,713
Deferred |  |  |  |  |  |  |  |  | (829) | 1,651 | 8,399
Provision (benefit) for income taxes |  |  |  |  |  |  |  |  | $ 6,461 | $ 7,463 | $ 7,656
Reconciliation of tax rates with the federal statutory rate |  |  |  |  |  |  |  |  |  |  |
Federal statutory rate (as a percent) |  |  |  |  |  |  |  |  | 21.00% | 35.00% | 35.00%
State income taxes, net of federal income tax benefit (as a percent) |  |  |  |  |  |  |  |  | 4.90% | 3.90% | 6.10%
Tax law changes (as a percent) |  |  |  |  |  |  |  |  | 0.90% | 23.70% | (0.30%)
Share-based compensation (as a percent) |  |  |  |  |  |  |  |  | (6.30%) | (15.80%) |
Nondeductible/nontaxable items (as a percent) |  |  |  |  |  |  |  |  | 2.90% | 5.10% | 3.00%
Foreign rate differential (as a percent) |  |  |  |  |  |  |  |  |  | (2.80%) | (3.30%)
Losses benefited/change in valuation allowance (as a percent) |  |  |  |  |  |  |  |  |  | (0.30%) | (4.90%)
Uncertain tax positions (as a percent) |  |  |  |  |  |  |  |  | (1.10%) | (0.10%) | (0.20%)
Other (as a percent) |  |  |  |  |  |  |  |  |  | 0.50% | (0.40%)
Effective tax rate (as a percent) |  |  |  |  |  |  |  |  | 22.30% | 49.20% | 35.00%

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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(10)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(15)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(8)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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