Legal Proceedings - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended		6 Months Ended	0 Months Ended
	Jul. 24, 2012 Technology Properties Limited LegalMatter	Jun. 14, 2013 Legal Claim 1 LegalMatter	Nov. 01, 2014 Legal Claim 1	Aug. 27, 2012 Commonwealth Scientific and Industrial Research Organisation LegalMatter	Apr. 17, 2012 Kevin Khoa Nguyen LegalMatter	Aug. 05, 2011 Lina LegalMatter	Apr. 23, 2013 Jones LegalMatter	Nov. 27, 2013 Carag LegalMatter	Jan. 25, 2013 Trimmer LegalMatter
Loss Contingencies [Line Items]
Number of putative shareholder derivative complaints filed	1	1		1	1	1	1	1	1
Damages awarded			$ 1,330