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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This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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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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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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The cash inflow from the additional capital contribution to the entity.

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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			1 Months Ended
	Mar. 25, 2013 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Mar. 25, 2013	Feb. 28, 2014 TyraTech Inc. USD ($)	Feb. 28, 2014 TyraTech Inc. GBP (£)
Equity Method Investments [Line Items]
Equity investment	$ 3,687us-gaap_PaymentsToAcquireInvestments
Shares issued by equity investee					37,391,763	37,391,763
Amount raised by equity investee on shares issued					3,100	1,870
Gain on dilution of equity method investment			256
Equity investment ownership position		21.18%		29.27%
Gain loss from equity method investment		0	(328)
Carrying value of equity investment		3,172us-gaap_EquityMethodInvestments
Quoted market value of equity investment		$ 3,914