Fair Value Measurement (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets:
Marketable securities	$ 47,945	$ 47,833
Foreign exchange contracts	1
Liabilities:
Foreign exchange contracts	102	64
Contingent Consideration	951	3,603
Certificates of deposits
Assets:
Marketable securities	1,226	1,975
Corporate bonds
Assets:
Marketable securities	46,719	45,858
Level II
Assets:
Foreign exchange contracts	1
Liabilities:
Foreign exchange contracts	102	64
Level II \| Certificates of deposits
Assets:
Marketable securities	1,226	1,975
Level II \| Corporate bonds
Assets:
Marketable securities	46,719	45,858
Level 3
Liabilities:
Contingent Consideration	$ 951	$ 3,603

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

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