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Investments in Limited Partnerships and Marketable Securities | 3 Months Ended
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Mar. 28, 2015
Marketable Securities and Equity-Method Affiliates [Abstract] |
INVESTMENTS IN LIMITED PARTNERSHIPS AND MARKETABLE SECURITIES | INVESTMENTS IN LIMITED PARTNERSHIPS AND MARKETABLE SECURITIES Investments in Limited Partnerships The Company invests in several venture capital limited partnerships that invest in start-up companies primarily in the life sciences industry. The Company’s ownership interest in these limited partnerships ranges from 3.8% to 12.0%. Due to the percentage of ownership, the Company accounts for such investments under the equity method of accounting. The Company’s total commitment to these entities as of March 28, 2015 is $65.0 million, of which the Company has funded $22.0 million through March 28, 2015. During the three months ended March 29, 2014, the Company received dividends in cash and securities totaling $6.5 million. No dividends were received during the three months ended March 28, 2015. The Company recognized gains related to these investments of $1.3 million and $6.1 million for the three months ended March 28, 2015 and March 29, 2014, respectively. Marketable Securities The following is a summary of the Company's marketable securities, all of which are classified as available-for-sale:
| March 28, 2015
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
| (in thousands)
Mutual fund | $ | 4,650 |  |  | $ | 16 |  |  | $ | — |  |  | $ | 4,666 |
Total | $ | 4,650 |  |  | $ | 16 |  |  | $ | — |  |  | $ | 4,666 |
There were no sales of available-for-sale securities during the three months ended March 28, 2015 or March 29, 2014.

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