The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence.

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Number of new stock issued during the period.

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Equity Investment - Additional Information (Detail) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended		9 Months Ended			1 Months Ended
	Mar. 25, 2013 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Mar. 25, 2013	Jul. 31, 2014 TyraTech Inc. USD ($)	Jul. 31, 2014 TyraTech Inc. GBP (£)	Feb. 28, 2014 TyraTech Inc. USD ($)	Feb. 28, 2014 TyraTech Inc. GBP (£)
Equity Method Investments [Line Items]
Equity investment	$ 3,687				$ 3,687
Equity investment ownership position		19.28%		19.28%		29.27%
Shares issued by equity investee							50,000,000	50,000,000	37,391,763	37,391,763
Amount raised by equity investee on shares issued				1,616	929		5,900	3,500	3,100	1,870
Gain on dilution of equity method investment				954
Loss from equity method investment		(237)	(386)	(633)	(386)
Carrying value of equity investment		3,022		3,022
Quoted market value of equity investment		$ 6,321		$ 6,321