Business combination period of contingent consideration payable.

No definition available.

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- Definition

Business combination period of issued shares held in escrow.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Period when results of operations of the acquired entity are included in the income statement of the combined entity, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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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.

+ References

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Balance Type:	credit
Period Type:	duration

- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

+ Details

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Period Type:	duration

- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

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

+ References

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Balance Type:	debit
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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands			1 Months Ended
	Nov. 30, 2020	Nov. 01, 2019	Sep. 30, 2020
LiquidityEdge LLC [Member]
Business Acquisition [Line Items]
Aggregate consideration		$ 153,210
Cash consideration		$ 104,400
Business combination, shares of common stock		146,450
Business combination, common stock value		$ 48,800
Business combination, period for shares of common stock placed in escrow		18 months
Business combination, shares of common stock received period		6 months
Amortizable intangible assets		$ 58,780
Regulatory Services GmbH of Deutsche Borse Group [Member]
Business Acquisition [Line Items]
Cash consideration	$ 22,500
Amortizable intangible assets	$ 37,400
Business combination, contingent consideration payment period	18 months
Regulatory Services GmbH of Deutsche Borse Group [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Contingent consideration payable	$ 24,600
MuniBrokers LLC [Member]
Business Acquisition [Line Items]
Cash consideration			$ 45,000
Business combination, contingent consideration payment period			3 years
Transaction costs			$ 20,000
MuniBrokers LLC [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Contingent consideration payable			$ 25,000
Escrow [Member] \| LiquidityEdge LLC [Member]
Business Acquisition [Line Items]
Business combination, shares of common stock		43,937