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Revenue from Contracts with Customers - Schedule of New Accounting Standard Impact on Financial Statements (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 28, 2019 | Sep. 28, 2019 | Jun. 29, 2019 | Mar. 30, 2019 | Dec. 29, 2018 | Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017
Condensed Consolidated Statement of Operations |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 100,237 | $ 103,469 | $ 102,296 | $ 98,091 | $ 95,977 | $ 101,484 | $ 102,715 | $ 98,623 | $ 404,093 | $ 398,799 | $ 385,961
Net loss | 13,987 | 13,539 | 8,559 | 7,408 | (7,121) | 6,974 | (20,223) | (5,952) | 43,493 | (26,322) | (70,562)
Cost of revenue |  |  |  |  |  |  |  |  | 165,671 | $ 179,360 | 169,382
Net loss per share, basic and diluted (in dollars per share) |  |  |  |  |  |  |  |  |  | $ (0.21) |
Condensed Consolidated Balance Sheets |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net of allowance for doubtful accounts | 64,917 |  |  |  | 60,890 |  |  |  | 64,917 | $ 60,890 |
Inventories | 54,980 |  |  |  | 67,096 |  |  |  | 54,980 | 67,096 |
Prepaid expenses and other current assets | 24,452 |  |  |  | 27,762 |  |  |  | 24,452 | 27,762 |
Total assets | 612,016 |  |  |  | 623,687 |  |  |  | 612,016 | 623,687 |
Accounts payable and accrued expenses (includes restructuring) | 60,255 |  |  |  | 51,763 |  |  |  | 60,255 | 51,763 |
Deferred income and allowances on sales to distributors |  |  |  |  | 0 |  |  |  |  | 0 |
Accumulated deficit | (433,290) |  |  |  | (476,783) |  |  |  | (433,290) | (476,783) |
Total liabilities and stockholders' equity | 612,016 |  |  |  | 623,687 |  |  |  | 612,016 | 623,687 |
Condensed Consolidated Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ 13,987 | $ 13,539 | $ 8,559 | $ 7,408 | (7,121) | $ 6,974 | $ (20,223) | $ (5,952) | 43,493 | (26,322) | (70,562)
Accounts receivable, net |  |  |  |  |  |  |  |  | (4,027) | (3,978) | 44,613
Inventories |  |  |  |  |  |  |  |  | 12,116 | 13,177 | (902)
Prepaid expenses and other assets |  |  |  |  |  |  |  |  | 3,740 | (11,667) | 889
Accounts payable and accrued expenses (includes restructuring) |  |  |  |  |  |  |  |  | 9,261 | 13,325 | (23,588)
Deferred income and allowances on sales to distributors |  |  |  |  |  |  |  |  |  | 0 |
Adjustments | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statement of Operations |  |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  |  |  |  | $ (9,177) |
Net loss per share, basic and diluted (in dollars per share) |  |  |  |  |  |  |  |  |  | $ (0.07) |
Condensed Consolidated Balance Sheets |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net of allowance for doubtful accounts |  |  |  |  | 6,600 |  |  |  |  | $ 6,600 |
Inventories |  |  |  |  | 78 |  |  |  |  | 78 |
Prepaid expenses and other current assets |  |  |  |  | (9,775) |  |  |  |  | (9,775) |
Total assets |  |  |  |  | (3,097) |  |  |  |  | (3,097) |
Accounts payable and accrued expenses (includes restructuring) |  |  |  |  | (1,156) |  |  |  |  | (1,156) |
Deferred income and allowances on sales to distributors |  |  |  |  | 34,637 |  |  |  |  | 34,637 |
Accumulated deficit |  |  |  |  | (36,578) |  |  |  |  | (36,578) |
Total liabilities and stockholders' equity |  |  |  |  | (3,097) |  |  |  |  | (3,097) |
Condensed Consolidated Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  |  | (9,177) |
Accounts receivable, net |  |  |  |  |  |  |  |  |  | (8,408) |
Inventories |  |  |  |  |  |  |  |  |  | (448) |
Prepaid expenses and other assets |  |  |  |  |  |  |  |  |  | 2,260 |
Accounts payable and accrued expenses (includes restructuring) |  |  |  |  |  |  |  |  |  | (1,614) |
Deferred income and allowances on sales to distributors |  |  |  |  |  |  |  |  |  | 17,387 |
Pro forma as if previous standard was in effect |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statement of Operations |  |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  |  |  |  | $ (35,499) |
Net loss per share, basic and diluted (in dollars per share) |  |  |  |  |  |  |  |  |  | $ (0.28) |
Condensed Consolidated Balance Sheets |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net of allowance for doubtful accounts |  |  |  |  | 67,490 |  |  |  |  | $ 67,490 |
Inventories |  |  |  |  | 67,174 |  |  |  |  | 67,174 |
Prepaid expenses and other current assets |  |  |  |  | 17,987 |  |  |  |  | 17,987 |
Total assets |  |  |  |  | 620,590 |  |  |  |  | 620,590 |
Accounts payable and accrued expenses (includes restructuring) |  |  |  |  | 50,607 |  |  |  |  | 50,607 |
Deferred income and allowances on sales to distributors |  |  |  |  | 34,637 |  |  |  |  | 34,637 |
Accumulated deficit |  |  |  |  | (513,361) |  |  |  |  | (513,361) |
Total liabilities and stockholders' equity |  |  |  |  | $ 620,590 |  |  |  |  | 620,590 |
Condensed Consolidated Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  |  | (35,499) |
Accounts receivable, net |  |  |  |  |  |  |  |  |  | (12,386) |
Inventories |  |  |  |  |  |  |  |  |  | 12,729 |
Prepaid expenses and other assets |  |  |  |  |  |  |  |  |  | (9,407) |
Accounts payable and accrued expenses (includes restructuring) |  |  |  |  |  |  |  |  |  | 11,711 |
Deferred income and allowances on sales to distributors |  |  |  |  |  |  |  |  |  | 17,387 |
Product |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statement of Operations |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 382,548 | 380,468 | 356,502
Cost of revenue |  |  |  |  |  |  |  |  |  | 179,101 |
Condensed Consolidated Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Deferred income and allowances on sales to distributors |  |  |  |  |  |  |  |  | 0 | 0 | (15,007)
Product | Adjustments | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statement of Operations |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | (14,098) |
Cost of revenue |  |  |  |  |  |  |  |  |  | (6,399) |
Product | Pro forma as if previous standard was in effect |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statement of Operations |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 366,370 |
Cost of revenue |  |  |  |  |  |  |  |  |  | 172,702 |
Licensing and services |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statement of Operations |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 21,545 | 18,331 | 29,459
Condensed Consolidated Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Deferred income and allowances on sales to distributors |  |  |  |  |  |  |  |  | $ 0 | (68) | $ (495)
Licensing and services | Adjustments | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statement of Operations |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | (1,478) |
Licensing and services | Pro forma as if previous standard was in effect |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statement of Operations |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | $ 16,853 |

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