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Income Taxes (Details 5) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Unrecognized Tax Benefits |  |  |  |
Unrecognized tax benefits at the beginning of the fiscal year |  | $ 110,179 | $ 98,540 | $ 87,820
Gross amount of the decreases in unrecognized tax benefits of tax positions taken during a prior year | [1] | (4,183) | (688) | (155)
Gross amount of the increases in unrecognized tax benefits as a result of tax positions taken during the current year |  | 2,370 | 13,141 | 11,342
Reductions to unrecognized tax benefits resulting from the lapse of the applicable statute of limitations |  | (5,179) | (3,028) | (149)
Increase resulting from foreign currency translation |  |  | 838 |
Decrease resulting from foreign currency translation |  | (1,330) |  | (318)
Unrecognized tax benefits at the end of the fiscal year |  | 101,857 | 110,179 | 98,540
Total amounts of unrecognized tax benefits that, if upon resolution of the uncertain tax positions would reduce Cadence's effective tax rate |  | 58,022 | 63,108 | 56,248
Interest and penalties recognized in Income Statements |  |  |  |
Interest |  | 585 | 1,865 | 1,166
Penalties |  | 342 | 218 | $ 3
Interest and penalties recognized in Balance Sheets |  |  |  |
Interest |  | 2,699 | 2,511 |
Penalties |  | $ 10 | $ 151 |
[1] | Includes unrecognized tax benefits of tax positions recorded in connection with acquisitions

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