Number of milestone event probable of occurrence or achieved.

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- Definition

Number of performance obligations for revenue recognized.

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No definition available.

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- Definition

Potential milestone payments receivable.

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No definition available.

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- Definition

Premium from sale of stock.

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No definition available.

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- Definition

For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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- Definition

Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

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Represents the value established as the selling price of the significant unit of accounting used to allocate the consideration of the multiple-deliverable arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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- Definition

Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights.

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Revenue Recognition - Additional Information (Detail) ¥ in Billions	1 Months Ended		3 Months Ended
	Apr. 30, 2013 USD ($) PerformanceObligation	Apr. 30, 2012 USD ($)	Mar. 31, 2018 USD ($) PerformanceObligation Milestone	Mar. 31, 2017 Milestone	Dec. 31, 2017 USD ($)	Apr. 30, 2013 JPY (¥)
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Receivables			$ 0		$ 0
Contract assets			0		0
Contract liabilities			0		$ 0
Remaining performance obligations			$ 0
Number of milestone event probable of occurrence or achieved \| Milestone			0	0
Royalty revenue			$ 0
Maruishi Agreement [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Number of performance obligations for revenue recognized \| PerformanceObligation	2		2
Upfront non-refundable, non-creditable license fee	$ 15,337,000
Premium from sale of stock	337,000
Maruishi Agreement [Member] \| License [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Upfront non-refundable, non-creditable license fee	9,637,000
Estimated selling price	10,200,000
Maruishi Agreement [Member] \| R&D Services [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Upfront non-refundable, non-creditable license fee	5,700,000
Estimated selling price	6,200,000
Maruishi Agreement [Member] \| Clinical Development and Regulatory Milestones [Member] \| Maximum [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Remaining potential consideration	$ 10,500,000
Maruishi Agreement [Member] \| One-time Sales Milestone [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Remaining potential consideration \| ¥						¥ 1
CKDP Agreement [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Upfront non-refundable, non-creditable license fee		$ 646,000
Premium from sale of stock		83,000
CKDP Agreement [Member] \| Clinical Development and Regulatory Milestones [Member] \| Maximum [Member]
Revenue Recognition Multiple Deliverable Arrangements [Line Items]
Remaining potential consideration		$ 3,750,000