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Fair Value of Financial Instruments (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 03, 2021 | Jan. 02, 2021
Money market mutual funds |  |
Fair Value of Financial Instruments |  |
Fair value per share of CRA's money market mutual fund share holdings (in dollars per share) | $ 1.00 |
Recurring |  |
Fair Value of Financial Instruments |  |
Total Assets | $ 0 |
Total Liabilities | 0 |
Summary of changes in contingent consideration liability |  |
Beginning balance | 14,620,000 | $ 11,579,000
Remeasurement of acquisition-related contingent consideration | 0 | 1,156,000
Accretion | 380,000 | 1,885,000
Payment of contingent consideration | (15,000,000) | 0
Ending balance | $ 0 | 14,620,000
Recurring | Level 1 |  |
Fair Value of Financial Instruments |  |
Total Assets |  | 150,000
Contingent consideration liability |  | 0
Total Liabilities |  | 0
Recurring | Level 1 | Money market mutual funds |  |
Fair Value of Financial Instruments |  |
Cash and cash equivalents |  | 150,000
Recurring | Level 2 |  |
Fair Value of Financial Instruments |  |
Total Assets |  | 0
Contingent consideration liability |  | 0
Total Liabilities |  | 0
Recurring | Level 2 | Money market mutual funds |  |
Fair Value of Financial Instruments |  |
Cash and cash equivalents |  | 0
Recurring | Level 3 |  |
Fair Value of Financial Instruments |  |
Total Assets |  | 0
Contingent consideration liability |  | 14,620,000
Total Liabilities |  | 14,620,000
Recurring | Level 3 | Money market mutual funds |  |
Fair Value of Financial Instruments |  |
Cash and cash equivalents |  | $ 0

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