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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2013
Fair Value Disclosures [Abstract] |
Schedule of assets and liabilities measured at fair value on recurring basis | Assets and liabilities measured at fair value are based the valuation techniques identified in the table below. The valuation techniques are:
(a) | Market approach—prices and other relevant information generated by market transactions involving identical or comparable assets.
(b) | The valuations of the interest rate swaps intended to mitigate the Company’s interest rate risk are determined with the assistance of a third-party financial institution using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. This analysis utilizes observable market-based inputs, including interest rate curves and interest rate volatility, and reflects the contractual terms of these instruments, including the period to maturity.
(c) | The valuations of foreign currency forward contracts are determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. This analysis utilizes observable market-based inputs, including commodity forward curves, and reflects the contractual terms of these instruments, including the period to maturity.
The following tables present financial assets at December 31, 2013 and December 31, 2012 for which the Company measures fair value on a recurring basis, by level, within the fair value hierarchy:
December 31, 2013 | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Valuation Technique
Assets |  |  |  |  |  |  |  |  |
Money market mutual funds | $ | 19,957 |  |  | $ | 19,957 |  |  | $ | — |  |  | $ | — |  |  | (a)
Government agency bonds | 8,041 |  |  | 8,041 |  |  | — |  |  | — |  |  | (a)
United States treasuries | 7,509 |  |  | 7,509 |  |  | — |  |  | — |  |  | (a)
Corporate notes | 8,453 |  |  | 8,453 |  |  | — |  |  | — |  |  | (a)
Certificates of deposit | 2,426 |  |  | 2,426 |  |  | — |  |  | — |  |  | (a)
Foreign currency forward contracts | 114 |  |  | — |  |  | 114 |  |  | — |  |  | (c)
Liabilities |  |  |  |  |  |  |  |  |
Interest rate swaps | $ | 332 |  |  | $ | — |  |  | $ | 332 |  |  | $ | — |  |  | (b)
December 31, 2012 | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Valuation Technique
Assets |  |  |  |  |  |  |  |  |
Money market mutual funds | $ | 9,921 |  |  | $ | 9,921 |  |  | $ | — |  |  | $ | — |  |  | (a)
Government agency bonds | 6,818 |  |  | 6,818 |  |  | — |  |  | — |  |  | (a)
United States treasuries | 6,089 |  |  | 6,089 |  |  | — |  |  | — |  |  | (a)
Corporate notes | 4,679 |  |  | 4,679 |  |  | — |  |  | — |  |  | (a)
Certificates of deposit | 1,800 |  |  | 1,800 |  |  | — |  |  | — |  |  | (a)
Liabilities |  |  |  |  |  |  |  |  |
Interest rate swaps | $ | 542 |  |  | $ | — |  |  | $ | 542 |  |  | $ | — |  |  | (b)

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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=7578670&loc=d3e19190-110258 + Details
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