v2.4.0.8

Business Acquisitions - Agarigen, Inc. - Additional Information (Detail) (Agarigen, Inc. [Member], USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	Jan. 26, 2011	Dec. 31, 2011
Business Acquisition [Line Items]
Percentage of outstanding common stock acquired	100.00%
Fair Value of Consideration Transferred	$ 3,773
Business acquisition, consideration paid, shares issued	386,142
Business acquisition, options to purchase common stock issued	165,255
Business acquisition, warrants to purchase common stock issued	511,098
Business acquisition, warrants to purchase common stock, price per share	0.79
Business combination, acquisition related costs		110
Warrant Expiration Year	2017-12
Minimum [Member]
Business Acquisition [Line Items]
Business acquisition, Common Stock Strike Price	0.38
Maximum [Member]
Business Acquisition [Line Items]
Business acquisition, Common Stock Strike Price	1.98
Patents and Related Technologies [Member]
Business Acquisition [Line Items]
Acquired Intangible Assets, useful life	9 years
Cash [Member]
Business Acquisition [Line Items]
Fair Value of Consideration Transferred	$ 1,178

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of shares of equity interests issued or issuable to acquire entity.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Exercise price per share or per unit of warrants or rights outstanding.

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The number of options issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The number of warrants issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The exercise (or strike) price stated in the contract. The fixed price at which the option holder can purchase, in the case of a call option, or sell, in the case of a put option, on the underlying security.

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Warrants Expiration Month And Year

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