Quarterly financial data.

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- Definition

Tax cuts and jobs act change in tax rate deferred tax asset income tax expense.

+ References

No definition available.

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

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- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
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Quarterly Financial Data (Unaudited) - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended				9 Months Ended	12 Months Ended
	Dec. 31, 2017	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Quarterly Financial Data [Line Items]
Discrete tax expense				$ 1,200		$ 1,600
U.S. federal statutory tax rate	21.00%						24.50%	35.00%	35.00%
Royalties and License Fees [Member]
Quarterly Financial Data [Line Items]
License fee revenue							$ 35,424	$ 31,787	$ 33,203
Royalties and License Fees [Member] \| Abbott [Member]
Quarterly Financial Data [Line Items]
License fee revenue			$ 4,400
Intellectual Property [Member] \| Embolitech LLC [Member]
Quarterly Financial Data [Line Items]
Payments to acquire intellectual property assets		$ 7,900					$ 5,000
Intellectual Property [Member] \| Royalties and License Fees [Member]
Quarterly Financial Data [Line Items]
License fee revenue					$ 1,100