Represents the amount of civil penalties as a part in settlement of litigation.

No definition available.

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- Definition

Represents the amount of disgorgement payment as a part in settlement of litigation.

+ References

No definition available.

+ Details

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- Definition

Number of current or former officers and directors of the company got filed by the company.

+ References

No definition available.

+ Details

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

The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

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Period Type:	duration

- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Period Type:	instant

- Definition

Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Paragraph 1
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Period Type:	instant

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Interest expense (income) directly attributable to an award in settlement of litigation.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

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Period Type:	duration

- Details

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- Details

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Commitments and Contingencies - Legal Matters (Details) $ in Thousands					3 Months Ended		6 Months Ended
	Nov. 07, 2018 USD ($)	Apr. 19, 2018 USD ($)	Nov. 27, 2015 item	Aug. 12, 2015 USD ($) item	Dec. 31, 2018 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2016 USD ($)
Contingencies – Legal Matters
Litigation settlement amount		$ 18,000
Accrued costs for potential class action lawsuit settlement					$ 18,000
Expense incurred as potential settlement with SEC						$ 12,000
Legal expenses					$ 8,000	$ 1,200
Settlement with S E C for Investigation into Proprietary Trading Pilot
Contingencies – Legal Matters
Civil penalty				$ 18,000
Disgorgement payment				2,100
Prejudgment interest				250
Litigation settlement amount				$ 20,300
Number of putative class action lawsuits \| item				2
Settlement with SEC regard to the operational features of U.S. POSIT
Contingencies – Legal Matters
Civil penalty	$ 12,000
Settlement Agreement With SEC Involving Pre-released ADRs
Contingencies – Legal Matters
Accrued settlement costs							$ 24,500
Legal expenses							$ 2,900
Case of derivative action captioned Watterson v. Gasser et al.
Contingencies – Legal Matters
Number of current or former officers and directors of the company got filed by the company \| item			11