Acquisition of Ceregene - Summary of Estimated Fair Value of Net Assets Acquired (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill	$ 1,585
Ceregene, Inc. [Member]
Business Acquisition [Line Items]
Cash and equivalents	79
Accounts receivable	22
Identifiable intangible assets	1,870
Goodwill	1,585
Total assets acquired	3,556
Deferred tax liability	(748)
Accounts payable and accrued liabilities	(98)
Total liabilities assumed	(846)
Net assets acquired	$ 2,710

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Amount of assets acquired at the acquisition date.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Amount of liabilities assumed at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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