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SUPPLEMENTAL BALANCE SHEET INFORMATION (Details) - USD ($) $ in Thousands | Mar. 30, 2019 | Dec. 30, 2018 | Dec. 29, 2018 | Mar. 31, 2018
--- | --- | --- | --- | ---
Composition of trade receivables |  |  |  |
Client receivables | $ 377,188 |  | $ 370,131 |
Contract assets (unbilled revenue) | 120,607 |  | 105,216 |
Total | 497,795 |  | 475,347 |
Less: Allowance for doubtful accounts | (2,294) |  | (3,099) |
Trade receivables, net | 495,501 |  | 472,248 |
Composition of inventories |  |  |  |
Raw materials and supplies | 22,118 |  | 22,378 |
Work in process | 20,710 |  | 21,732 |
Finished products | 86,937 |  | 83,782 |
Inventories | 129,765 |  | 127,892 |
Composition of other current assets |  |  |  |
Prepaid income tax | 54,153 |  | 47,157 |
Investments | 907 |  | 885 |
Restricted cash | 491 |  | 465 | $ 605
Other | 500 |  | 300 |
Other current assets | 56,051 |  | 48,807 |
Composition of other assets |  |  |  |
Venture capital investments | 100,666 |  | 88,591 |
Life insurance policies | 34,939 |  | 32,340 |
Restricted cash | 1,499 |  | 1,411 | $ 2,021
Other | 20,901 |  | 21,417 |
Other assets | 158,005 | $ 138,770 | 143,759 |
Composition of other current liabilities |  |  |  |
Current portion of right-of-use liabilities-operating leases | 18,912 |  |  |
Accrued income taxes | 25,725 |  | 24,120 |
Customer contract deposits | 32,380 |  | 38,245 |
Other | 14,455 |  | 8,915 |
Other current liabilities | 91,472 | $ 87,215 | 71,280 |
Composition of other long-term liabilities |  |  |  |
U.S. Transition Tax | 52,066 |  | 52,064 |
Long-term pension liability | 24,589 |  | 24,671 |
Accrued executive supplemental life insurance retirement plan | 36,522 |  | 36,086 |
Long-term deferred revenue | 28,819 |  | 34,420 |
Other | 31,566 |  | 31,880 |
Other long-term liabilities | $ 173,562 |  | $ 179,121 |

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