Long-Lived Assets by Geographic Location (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Reportable Geographical Components	Dec. 31, 2012 Reportable Geographical Components	Sep. 30, 2014 Reportable Geographical Components Americas	Dec. 31, 2012 Reportable Geographical Components Americas	Sep. 30, 2014 Reportable Geographical Components Americas United States	Dec. 31, 2012 Reportable Geographical Components Americas United States	Sep. 30, 2014 Reportable Geographical Components Americas Other	Dec. 31, 2012 Reportable Geographical Components Americas Other	Sep. 30, 2014 Reportable Geographical Components Europe And Middle East	Dec. 31, 2012 Reportable Geographical Components Europe And Middle East	Sep. 30, 2014 Reportable Geographical Components Europe And Middle East Germany	Dec. 31, 2012 Reportable Geographical Components Europe And Middle East Germany	Sep. 30, 2014 Reportable Geographical Components Asia-Pacific	Dec. 31, 2012 Reportable Geographical Components Asia-Pacific	Sep. 30, 2014 Reportable Geographical Components Asia-Pacific Other	Dec. 31, 2012 Reportable Geographical Components Asia-Pacific Other	Sep. 30, 2014 Reportable Geographical Components Asia-Pacific Singapore	Dec. 31, 2012 Reportable Geographical Components Asia-Pacific Singapore
Segment Reporting Information [Line Items]
Property and equipment, net	$ 5,631	$ 5,888	$ 5,631	$ 5,888	$ 2,127	$ 1,694	$ 2,127	$ 1,693	$ 0	$ 1	$ 1,419	$ 1,839	$ 1,419	$ 1,839	$ 2,085	$ 2,355	$ 71	$ 97	$ 2,014	$ 2,258