Contingencies - Additional Information (Detail)	1 Months Ended
	Jan. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) Claim	Jul. 31, 2013 USD ($)
Loss Contingencies [Line Items]
Compensatory damages sought		$ 30,000,000
Subsequent Event
Loss Contingencies [Line Items]
Compensatory damages sought	$ 30,000,000
Minimum
Loss Contingencies [Line Items]
Compensatory damages sought			$ 8,800,000
Debtor’s principals
Loss Contingencies [Line Items]
Compensatory damages sought			2,800,000
License fee
Loss Contingencies [Line Items]
Compensatory damages sought			$ 6,000,000
Class Actions
Loss Contingencies [Line Items]
Number of pending claims | Claim		3