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SUPPLEMENTAL BALANCE SHEET INFORMATION (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 30, 2017 | Jul. 01, 2017
--- | --- | --- | ---
Composition of trade receivables |  |  |
Client receivables | $ 372,360 | $ 335,839 |
Contract assets (unbilled revenue) | 108,580 | 96,297 |
Total | 480,940 | 432,136 |
Less: Allowance for doubtful accounts | (2,205) | (2,120) |
Trade receivables, net | 478,735 | 430,016 |
Composition of inventories |  |  |
Raw materials and supplies | 21,160 | 19,858 |
Work in process | 20,084 | 18,200 |
Finished products | 82,887 | 76,898 |
Inventories | 124,131 | 114,956 |
Composition of other current assets |  |  |
Investments | 903 | 28,489 |
Prepaid income taxes | 48,037 | 52,234 |
Restricted cash | 593 | 592 | $ 568
Other | 300 | 0 |
Other current assets | 49,833 | 81,315 |
Composition of other assets |  |  |
Life insurance policies | 34,919 | 34,008 |
Venture capital investments | 91,323 | 71,101 |
Restricted cash | 2,472 | 1,945 | $ 1,986
Other | 20,556 | 16,948 |
Other assets | 149,270 | 124,002 |
Composition of other current liabilities |  |  |
Accrued income taxes | 26,915 | 43,250 |
Contract liabilities (customer contract deposits) | 37,543 | 0 |
Other | 9,145 | 1,210 |
Other current liabilities | 73,603 | 44,460 |
Composition of other long-term liabilities |  |  |
U.S. Transition Tax | 61,038 | 61,038 |
Long-term pension liability | 47,803 | 52,364 |
Accrued executive supplemental life insurance retirement plan and deferred compensation plan | 38,215 | 37,582 |
Other | 49,584 | 43,831 |
Other long-term liabilities | $ 196,640 | $ 194,815 |

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