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Basis of Presentation and Significant Accounting Policies (Tables) | 3 Months Ended
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Mar. 29, 2014
Fair Value of Assets and Liabilities Measured on a Recurring Basis [Abstract] |
Fair Value of Assets and Liabilities Measured on a Recurring Basis | The following table represents the Company's assets and liabilities measured at fair value on a recurring basis at March 29, 2014 (in thousands):
|  |  |  |  |  |  | Quoted Prices |  |  |  |  |  |
|  |  |  |  |  |  | in Active |  | Significant |  |  |
|  |  |  |  |  |  | Markets |  | Other |  | Significant
|  |  |  |  |  |  | for Identical |  | Observable |  | Unobservable
|  |  |  | Total at |  | Assets |  | Inputs |  | Inputs
|  |  |  | March 29, 2014 |  | (Level 1) |  | (Level 2) |  | (Level 3)
Assets: |  |  |  |  |  |  |  |  |  |  |  |
| U.S. Treasury securities |  | $ | 629,981 |  | $ | - |  | $ | 629,981 |  | $ | -
| Foreign government securities |  |  | 34,990 |  |  | - |  |  | 34,990 |  |  | -
| Corporate debt securities |  |  | 757,815 |  |  | - |  |  | 757,815 |  |  | -
| Time deposits |  |  | 70,845 |  |  | - |  |  | 70,845 |  |  | -
| Equity securities |  |  | 147 |  |  | - |  |  | 147 |  |  | -
| Other cash equivalents |  |  | 54,929 |  |  | - |  |  | 54,929 |  |  | -
| Waters 401(k) Restoration Plan assets |  |  | 31,901 |  |  | - |  |  | 31,901 |  |  | -
| Foreign currency exchange contract |  |  |  |  |  |  |  |  |  |  |  |
|  | agreements |  |  | 370 |  |  | - |  |  | 370 |  |  | -
|  | Total |  | $ | 1,580,978 |  | $ | - |  | $ | 1,580,978 |  | $ | -
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
| Foreign currency exchange contract |  |  |  |  |  |  |  |  |  |  |  |
|  | agreements |  | $ | 410 |  | $ | - |  | $ | 410 |  | $ | -
|  | Total |  | $ | 410 |  | $ | - |  | $ | 410 |  | $ | -
The following table represents the Company's assets and liabilities measured at fair value on a recu rring basis at December 31, 2013 (in thousands):
|  |  |  |  |  |  | Quoted Prices |  |  |  |  |  |
|  |  |  |  |  |  | in Active |  | Significant |  |  |
|  |  |  |  |  |  | Markets |  | Other |  | Significant
|  |  |  | Total at |  | for Identical |  | Observable |  | Unobservable
|  |  |  | December 31, |  | Assets |  | Inputs |  | Inputs
|  |  |  | 2013 |  | (Level 1) |  | (Level 2) |  | (Level 3)
Assets: |  |  |  |  |  |  |  |  |  |  |  |
| U.S. Treasury securities |  | $ | 556,539 |  | $ | - |  | $ | 556,539 |  | $ | -
| Foreign government securities |  |  | 139,670 |  |  | - |  |  | 139,670 |  |  | -
| Corporate debt securities |  |  | 629,434 |  |  | - |  |  | 629,434 |  |  | -
| Time deposits |  |  | 74,050 |  |  | - |  |  | 74,050 |  |  | -
| Equity securities |  |  | 147 |  |  | - |  |  | 147 |  |  | -
| Other cash equivalents |  |  | 62,851 |  |  | - |  |  | 62,851 |  |  | -
| Waters 401(k) Restoration Plan assets |  |  | 31,203 |  |  | - |  |  | 31,203 |  |  | -
| Foreign currency exchange contract |  |  |  |  |  |  |  |  |  |  |  |
|  | agreements |  |  | 929 |  |  | - |  |  | 929 |  |  | -
|  | Total |  | $ | 1,494,823 |  | $ | - |  | $ | 1,494,823 |  | $ | -
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
| Foreign currency exchange contract |  |  |  |  |  |  |  |  |  |  |  |
|  | agreements |  | $ | 88 |  | $ | - |  | $ | 88 |  | $ | -
|  | Total |  | $ | 88 |  | $ | - |  | $ | 88 |  | $ | -
Summary of Derivative Instruments by Risk Exposure [Abstract] |
Gains (Losses) on Foreign Exchange Contracts | The following is a summary of the activity in the statements of operations related to the forward foreign exchange contracts (in thousands):
|  | Three Months Ended
|  | March 29, 2014 |  | March 30, 2013
Realized (losses) gains on closed contracts |  | $ | (314) |  | $ | 694
Unrealized losses on open contracts |  |  | (881) |  |  | (570)
Cumulative net pre-tax (losses) gains |  | $ | (1,195) |  | $ | 124
Fair Value of Forward Foreign Exchange Contracts | T he Company's foreign currency exchange contracts included in the consolid ated balance sheets are classified as follows (in thousands):
|  |  | March 29, 2014 |  | December 31, 2013
Other current assets |  | $ | 370 |  | $ | 929
Other current liabilities |  | $ | 410 |  | $ | 88
Warranty Accrual Roll Forward [Abstract] |
Warranty Accrual Roll Forward | The following is a summary of the activity of the Company's accrued warranty liability for the three months ended March 29, 2014 and March 30, 2013 (in thousands):
|  | Balance at |  |  |  |  |  | Balance at
|  | Beginning |  | Accruals for |  | Settlements |  | End of
|  | of Period |  | Warranties |  | Made |  | Period
Accrued warranty liability: |  |  |  |  |  |  |  |  |  |  |  |
March 29, 2014 |  | $ | 12,962 |  | $ | 1,752 |  | $ | (1,919) |  | $ | 12,795
March 30, 2013 |  | $ | 12,353 |  | $ | 2,404 |  | $ | (2,101) |  | $ | 12,656

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
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- Definition Tabular disclosure of the presentation of foreign exchange contracts on the statement of financial position, including the fair value amounts and location of such amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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