Represents the allocation of excess fair value under the equity method investment.

No definition available.

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- Definition

Represents the value by which the carrying value exceeded the company's assets under the equity method investment.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Represents amount in holdbacks and escrows under equity method investments.

+ References

No definition available.

+ Details

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 35
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=121548190&loc=d3e32787-111569

+ Details

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- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(7)(c))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(9)(a))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

+ Details

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

- Definition

Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(3)(d))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=120269885&loc=SL75117546-209714

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- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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Balance Type:	debit
Period Type:	duration

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- Details

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- Details

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- Details

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- Details

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Note 2 - Ownership Interests and Advances (Details Textual) - USD ($) $ in Millions	1 Months Ended			12 Months Ended
	Sep. 30, 2020	May 31, 2019	Jan. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Equity Securities, FV-NI, Unrealized Gain (Loss), Total					$ 4.5
Equity Method Investment Assets Exceed Carrying Value Of Investment				$ 17.9
Intangible Assets [Member]
Equity Method Investment Allocation of Excess Fair Value				15.0
Goodwill [Member]
Equity Method Investment Allocation of Excess Fair Value				2.9
Sonobi [Member]
Proceeds from Sale of Equity Method Investments	$ 6.6
WebLinc, Inc., QuanticMind, Inc. and Sonobi, Inc. [Member]
Equity Method Investment, Other than Temporary Impairment				11.3
T-Rex Group, Inc [Member]
Equity Method Investment, Other than Temporary Impairment				8.8
Flashtalking, Inc. [Member]
Equity Securities, FV-NI, Unrealized Gain (Loss), Total				1.5
Ownership Interest, Other [Member]
Equity Securities, FV-NI, Unrealized Gain (Loss), Total				0.3
NovaSom [Member]
Equity Method Investment, Other than Temporary Impairment					$ 3.0
Propeller [Member]
Proceeds from Sale of Equity Method Investments			$ 41.5
Equity Method Investments, Amount in Holdbacks and Escrows				0.7
Equity Method Investment, Realized Gain (Loss) on Disposal, Total				$ 35.1
Transactis [Member]
Proceeds from Sale of Equity Method Investments		$ 57.5
Equity Method Investment, Realized Gain (Loss) on Disposal, Total		$ 50.7