Acquisitions - Allocation of Purchase Price and Estimated Useful Lives of Assets Acquired (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Dec. 31, 2012
Business Acquisition [Line Items]
Tangible assets acquired	3,597
Liabilities assumed	(2,123)
Goodwill	31,440
Total	65,547
Ziff Davis [Member]
Business Acquisition [Line Items]
Tangible assets acquired
Liabilities assumed	(255)
Goodwill	1,955
Total	17,270
Itbe [Member]
Business Acquisition [Line Items]
Tangible assets acquired	3,597
Liabilities assumed	(1,868)
Goodwill	12,042
Total	23,961
Other [Member]
Business Acquisition [Line Items]
Tangible assets acquired
Liabilities assumed
Goodwill	17,443
Total	24,316
Customer/publisher/advertiser relationships [Member]
Business Acquisition [Line Items]
Acquired technology and other	7,785
Customer/publisher/advertiser relationships [Member] \| Ziff Davis [Member]
Business Acquisition [Line Items]
Acquired technology and other	4,120
Customer/publisher/advertiser relationships [Member] \| Itbe [Member]
Business Acquisition [Line Items]
Acquired technology and other	3,230
Customer/publisher/advertiser relationships [Member] \| Other [Member]
Business Acquisition [Line Items]
Acquired technology and other	435
Content [Member]
Business Acquisition [Line Items]
Acquired technology and other	5,461
Content [Member] \| Ziff Davis [Member]
Business Acquisition [Line Items]
Acquired technology and other	500
Content [Member] \| Itbe [Member]
Business Acquisition [Line Items]
Acquired technology and other	420
Content [Member] \| Other [Member]
Business Acquisition [Line Items]
Acquired technology and other	4,541
Website/trade/domain names [Member]
Business Acquisition [Line Items]
Acquired technology and other	8,100
Website/trade/domain names [Member] \| Ziff Davis [Member]
Business Acquisition [Line Items]
Acquired technology and other	4,630
Website/trade/domain names [Member] \| Itbe [Member]
Business Acquisition [Line Items]
Acquired technology and other	2,220
Website/trade/domain names [Member] \| Other [Member]
Business Acquisition [Line Items]
Acquired technology and other	1,250
Registered user database [Member]
Business Acquisition [Line Items]
Acquired technology and other	10,540
Registered user database [Member] \| Ziff Davis [Member]
Business Acquisition [Line Items]
Acquired technology and other	6,320
Registered user database [Member] \| Itbe [Member]
Business Acquisition [Line Items]
Acquired technology and other	4,220
Registered user database [Member] \| Other [Member]
Business Acquisition [Line Items]
Acquired technology and other
Acquired technology and other [Member]
Business Acquisition [Line Items]
Acquired technology and other	560
Acquired technology and other [Member] \| Ziff Davis [Member]
Business Acquisition [Line Items]
Acquired technology and other
Acquired technology and other [Member] \| Itbe [Member]
Business Acquisition [Line Items]
Acquired technology and other
Acquired technology and other [Member] \| Other [Member]
Business Acquisition [Line Items]
Acquired technology and other	560
Noncompete agreements [Member]
Business Acquisition [Line Items]
Acquired technology and other	187
Noncompete agreements [Member] \| Ziff Davis [Member]
Business Acquisition [Line Items]
Acquired technology and other
Noncompete agreements [Member] \| Itbe [Member]
Business Acquisition [Line Items]
Acquired technology and other	100
Noncompete agreements [Member] \| Other [Member]
Business Acquisition [Line Items]
Acquired technology and other	87
Minimum [Member]
Business Acquisition [Line Items]
Estimate useful life of goodwill	Indefinite
Minimum [Member] \| Customer/publisher/advertiser relationships [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	3 years
Minimum [Member] \| Content [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	2 years
Minimum [Member] \| Website/trade/domain names [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	4 years
Minimum [Member] \| Registered user database [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	3 years
Minimum [Member] \| Acquired technology and other [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	4 years
Minimum [Member] \| Noncompete agreements [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	1 year
Maximum [Member] \| Customer/publisher/advertiser relationships [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	5 years
Maximum [Member] \| Content [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	5 years
Maximum [Member] \| Website/trade/domain names [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	8 years
Maximum [Member] \| Acquired technology and other [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	5 years
Maximum [Member] \| Noncompete agreements [Member]
Business Acquisition [Line Items]
Estimated useful lives of the assets	3 years 6 months

Estimate useful life of goodwill.

No definition available.

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 35

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 53

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The amount of acquisition cost of a business combination allocated to liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 98-1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 37

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The amount of acquisition cost of a business combination allocated to net tangible assets.

+ References

No definition available.

+ Details

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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