Fair Value Measurements for Assets at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Indemnification assets:
Software cost reimbursement	$ 1,632	$ 3,586
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Indemnification assets:
Software cost reimbursement	$ 1,632	$ 3,586