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Goodwill and Intangible Assets - Intangible Assets (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended			1 Months Ended	0 Months Ended	1 Months Ended				0 Months Ended		0 Months Ended
	Aug. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Aug. 31, 2013 Completed Technology [Member]	Mar. 12, 2013 Alter [Member]	Jun. 30, 2013 Alter [Member]	Mar. 31, 2013 Alter [Member]	Mar. 31, 2013 Alter [Member] Completed Technology [Member]	Mar. 31, 2013 Alter [Member] Trade Names [Member]	Aug. 29, 2012 Plasmart, Inc. [Member]	Aug. 29, 2012 Plasmart, Inc. [Member] Completed Technology [Member]	Aug. 29, 2012 Plasmart, Inc. [Member] Trade Names [Member]	Aug. 29, 2012 Plasmart, Inc. [Member] Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition purchase price		$ 2,326	$ 22,607			$ 2,426	$ 2,058	$ 2,426			$ 22,607
Completed technology of net assets	268				388	2,806					10,745		335	5,381
Intangible asset in connection with acquisition						$ 2,806		$ 2,806	$ 2,208	$ 598	$ 10,745	$ 5,029	$ 335	$ 5,381

X

- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472

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X

- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

No definition available.

+ Details

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X

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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