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Variable Interest Entity Variable Interest Entity (VIE) -Consolidating Statement of Operations (Details) - USD ($) | 3 Months Ended
--- | ---
Apr. 02, 2016 | Apr. 04, 2015
Product Revenue | $ 163,290,000 | $ 147,357,000
Royalty | 7,877,000 | 7,180,000
Total revenue | 171,167,000 | 154,537,000
Cost of goods sold | 56,954,000 | 51,432,000
Gross profit | 114,213,000 | 103,105,000
Selling, general and administrative | 62,511,000 | 60,799,000
Research and Development Expense | 14,365,000 | 14,929,000
Operating Expenses | 76,876,000 | 75,728,000
Operating Income (Loss) | 37,337,000 | 27,377,000
Nonoperating Income (Expense) | 498,000 | 153,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest | 37,835,000 | 27,530,000
Provision for income taxes | 10,258,000 | 7,708,000
Net income including noncontrolling interest | 27,577,000 | 19,822,000
Net Income (Loss) Attributable to Noncontrolling Interest | 0 | 701,000
Net Income (Loss) Attributable to Parent | $ 27,577,000 | 20,523,000
Parent Company [Member] |  |
Product Revenue |  | 147,357,000
Royalty |  | 7,180,000
Total revenue |  | 154,537,000
Cost of goods sold |  | 52,682,000
Gross profit |  | 101,855,000
Selling, general and administrative |  | 60,276,000
Research and Development Expense |  | 13,501,000
Operating Expenses |  | 73,777,000
Operating Income (Loss) |  | 28,078,000
Nonoperating Income (Expense) |  | 153,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |  | 28,231,000
Provision for income taxes |  | 7,708,000
Net income including noncontrolling interest |  | 20,523,000
Net Income (Loss) Attributable to Noncontrolling Interest |  | 0
Net Income (Loss) Attributable to Parent |  | 20,523,000
Cercacor Laboratories [Member] |  |
Product Revenue |  | 0
Royalty |  | 1,375,000
Total revenue |  | 1,375,000
Cost of goods sold |  | 0
Gross profit |  | 1,375,000
Selling, general and administrative |  | 648,000
Research and Development Expense |  | 1,428,000
Operating Expenses |  | 2,076,000
Operating Income (Loss) |  | (701,000)
Nonoperating Income (Expense) |  | 0
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |  | (701,000)
Provision for income taxes |  | 0
Net income including noncontrolling interest |  | (701,000)
Net Income (Loss) Attributable to Noncontrolling Interest |  | 0
Net Income (Loss) Attributable to Parent |  | (701,000)
Cercacor Laboratories Inc Eliminations [Member] |  |
Product Revenue |  | 0
Royalty |  | (1,375,000)
Total revenue |  | (1,375,000)
Cost of goods sold |  | (1,250,000)
Gross profit |  | (125,000)
Selling, general and administrative |  | (125,000)
Research and Development Expense |  | 0
Operating Expenses |  | (125,000)
Operating Income (Loss) |  | 0
Nonoperating Income (Expense) |  | 0
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |  | 0
Provision for income taxes |  | 0
Net income including noncontrolling interest |  | 0
Net Income (Loss) Attributable to Noncontrolling Interest |  | 701,000
Net Income (Loss) Attributable to Parent |  | 701,000
Percentage of Revenue [Member] |  |
Product Revenue |  | 0
Royalty |  | 0
Total revenue |  | 0
Cost of goods sold |  | 0
Gross profit |  | 0
Selling, general and administrative |  | 0
Research and Development Expense |  | 0
Operating Expenses |  | 0
Operating Income (Loss) |  | 0
Nonoperating Income (Expense) |  | 0
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |  | 0
Provision for income taxes |  | 0
Net income including noncontrolling interest |  | 0
Net Income (Loss) Attributable to Noncontrolling Interest |  | 0
Net Income (Loss) Attributable to Parent |  | 0
Percentage of Revenue [Member] | Parent Company [Member] |  |
Product Revenue |  | 0
Royalty |  | 0
Total revenue |  | 0
Cost of goods sold |  | 0
Gross profit |  | 0
Selling, general and administrative |  | 0
Research and Development Expense |  | 0
Operating Expenses |  | 0
Operating Income (Loss) |  | 0
Nonoperating Income (Expense) |  | 0
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |  | 0
Provision for income taxes |  | 0
Net income including noncontrolling interest |  | 0
Net Income (Loss) Attributable to Noncontrolling Interest |  | (0.000)
Net Income (Loss) Attributable to Parent |  | $ 0

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