Revenue Recognition - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Standard payment terms to customers			30 days
Losses recognized on fixed-price contracts	$ 0	$ 0	$ 0	$ 0
Recognition of the gross margin on the transaction, period			3 years
Maintenance fee revenue recognition period			1 year
Purchase of software and intellectual property					3,250,000
Amount of license consideration and subsequent development and training services					3,250,000
License related revenue	$ 0.0	$ 934,000	$ 0.0	$ 1,400,000
Minimum [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Warranty period on fixed-price contracts			30 days
Maximum [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Warranty period on fixed-price contracts			60 days