Total of debt securities categorized neither as held-to-maturity nor trading which are intended be sold or mature within one year from the balance sheet date or the normal operating cycle, whichever is longer.

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+ Details

- Definition

Total of debt securities categorized neither as held-to-maturity nor trading which are intended be sold or mature more than one year from the balance sheet date or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

+ References+ Details

Fair Value Measurements of Assets and Liability on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets
Derivative assets	$ 518	$ 484
Time Deposits
Assets
Cash equivalents	1,214	1,668
Short-term marketable securities and time deposits	2,785	2,708
Money market mutual funds
Assets
Cash equivalents	3,689	3,548
Corporate debt securities
Assets
Short-term marketable securities and time deposits	14,942	17,493
Long-term marketable securities	79,912	76,823
U.S. GSE securities
Assets
Short-term marketable securities and time deposits
Long-term marketable securities	2,960	1,510
Quoted prices in active markets (Level 1)
Assets
Derivative assets
Quoted prices in active markets (Level 1) \| Time Deposits
Assets
Cash equivalents
Short-term marketable securities and time deposits
Quoted prices in active markets (Level 1) \| Money market mutual funds
Assets
Cash equivalents	3,689	3,548
Quoted prices in active markets (Level 1) \| Corporate debt securities
Assets
Short-term marketable securities and time deposits
Long-term marketable securities
Quoted prices in active markets (Level 1) \| U.S. GSE securities
Assets
Short-term marketable securities and time deposits
Long-term marketable securities
Significant other observable inputs (Level 2)
Assets
Derivative assets	518	484
Significant other observable inputs (Level 2) \| Time Deposits
Assets
Cash equivalents	1,214	1,668
Short-term marketable securities and time deposits	2,785	2,708
Significant other observable inputs (Level 2) \| Money market mutual funds
Assets
Cash equivalents
Significant other observable inputs (Level 2) \| Corporate debt securities
Assets
Short-term marketable securities and time deposits	14,942	17,493
Long-term marketable securities	79,912	76,823
Significant other observable inputs (Level 2) \| U.S. GSE securities
Assets
Short-term marketable securities and time deposits
Long-term marketable securities	2,960	1,510
Significant unobservable inputs (Level 3)
Assets
Derivative assets
Significant unobservable inputs (Level 3) \| Time Deposits
Assets
Cash equivalents
Short-term marketable securities and time deposits
Significant unobservable inputs (Level 3) \| Money market mutual funds
Assets
Cash equivalents
Significant unobservable inputs (Level 3) \| Corporate debt securities
Assets
Short-term marketable securities and time deposits
Long-term marketable securities
Significant unobservable inputs (Level 3) \| U.S. GSE securities
Assets
Short-term marketable securities and time deposits
Long-term marketable securities