Contingencies - Additional Information (Detail) (USD $)		1 Months Ended								1 Months Ended				3 Months Ended
	Mar. 31, 2013	Dec. 21, 2013 MGA	Dec. 23, 2013 MGA	Jan. 24, 2013 MGA	Aug. 31, 2011 MGA	Aug. 11, 2011 MGA	Apr. 30, 2011 MGA LegalMatter	Apr. 27, 2009 MGA	Jul. 17, 2008 MGA	Jan. 23, 2014 MGA Minimum	Jul. 26, 2013 Yellowstone	Jan. 31, 2010 Yellowstone	Apr. 30, 1999 Yellowstone	Mar. 31, 2014 Yellowstone
Commitments and Contingencies Disclosure [Line Items]
Historical jury verdict								$ 100,000,000	$ 100,000,000
Claimed trade secrets							26
Other claimed trade secrets							88
Compensatory damages awarded by jury							88,500,000
Reduced compensatory damages awarded by court					85,000,000
Punitive damages awarded					85,000,000
Attorney fees and costs awarded					140,000,000
Compensatory damages, punitive damages, and attorney fees and costs awarded by court					310,000,000
Damages for alleged trade secret misappropriation appealed						170,000,000
Attorney fees and costs appealed						140,000,000
Amount of damages and attorney's fees and costs vacated by the appeals court				172,500,000
Approximate amount of judgment finalized in the District Court, including interest		138,000,000
Payment of Judgment			138,000,000
Litigation accrual	137,800,000			138,000,000
Alleged trade secrets damages claimed										1,000,000,000
Alleged loss of profits													1,000,000
Unpaid accounts receivable														4,000,000
Alleged business investments														3,000,000
Initial court appointed expert estimated loss of profits														1,000,000
Court awarded damages from counterclaim												4,000,000
Damages awarded by Appeals Court including inflation and interest											20,000,000
Counterclaim Awarded By Appeals Court											8,000,000
Reasonably possible range of loss, minimum														0
Reasonably possible range of loss, maximum														$ 20,000,000