XML 69 R28.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Cash and Investments (Tables) | 6 Months Ended
--- | ---
Jun. 29, 2013
Investments, Debt and Equity Securities [Abstract] |
Cash, Cash Equivalents and Available-for-sale Investments | The following table presents cash, cash equivalents, and available-for-sale investments as of June 29, 2013, and December 29, 2012 (in thousands):
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Market Value
June 29, 2013 |  |  |  |  |  |  |
Cash | $ | 36,615 |  |  | $ | — |  |  | $ | — |  |  | $ | 36,615 |
Cash equivalents: |  |  |  |  |  |  |
Money market funds | 486 |  |  | — |  |  | — |  |  | 486 |
Commercial paper | — |  |  | — |  |  | — |  |  | — |
Municipal securities | 2,000 |  |  | 1 |  |  | — |  |  | 2,001 |
Marketable securities: |  |  |  |  |  |  |
Commercial paper | 1,000 |  |  | — |  |  | — |  |  | 1,000 |
U.S. Treasury securities | 4,999 |  |  | 1 |  |  | — |  |  | 5,000 |
U.S. Government agency securities | 15,103 |  |  | 2 |  |  | (5 | ) |  | 15,100 |
Municipal securities | 9,984 |  |  | 7 |  |  | (1 | ) |  | 9,990 |
Corporate debt securities | 16,085 |  |  | 2 |  |  | (15 | ) |  | 16,072 |
Total cash, cash equivalents, and short-term investments | $ | 86,272 |  |  | $ | 13 |  |  | $ | (21 | ) |  | $ | 86,264 |
December 29, 2012 |  |  |  |  |  |  |
Cash | $ | 60,206 |  |  | $ | — |  |  | $ | — |  |  | $ | 60,206 |
Cash equivalents: |  |  |  |  |  |  |
Money market funds | 109 |  |  | — |  |  | — |  |  | 109 |
Commercial paper | 2,600 |  |  | — |  |  | — |  |  | 2,600 |
Short-term investments: |  |  |  |  |  |  |
Commercial paper | 3,199 |  |  | — |  |  | — |  |  | 3,199 |
U.S. Treasury Securities | 4,996 |  |  | 1 |  |  | — |  |  | 4,997 |
U.S. Government agency securities | 15,567 |  |  | 6 |  |  | (2 | ) |  | 15,571 |
Municipal securities | 5,396 |  |  | 1 |  |  | (1 | ) |  | 5,396 |
Corporate debt securities | 17,837 |  |  | 2 |  |  | (9 | ) |  | 17,830 |
Total cash, cash equivalents, and short-term investments | $ | 109,910 |  |  | $ | 10 |  |  | $ | (12 | ) |  | $ | 109,908 |

X
- Definition Schedule of Cash, Cash Equivalents and Available-for-sale Securities Reconciliation [Table Text Block] + References No definition available. + Details
Name: | nano_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | nano_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration