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Business Combinations and Acquisitions of Noncontrolling Interests Business Combinations (Details) (USD $)
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3 Months Ended |
6 Months Ended |
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Jun. 30, 2014
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Jun. 30, 2014
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Jun. 30, 2013
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Dec. 31, 2013
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| Business Acquisition [Line Items] |
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| Common stock issued in connection with acquisition of business, shares |
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13,825,283 |
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| Number of Businesses Acquired |
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4 |
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| Business Combination, Transaction Costs |
$ 600,000 |
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$ 2,400,000 |
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| Consideration Transferred [Abstract] |
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| Receivable from seller for working capital adjustments in connection with acquisitions |
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(3,446,000) |
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0 |
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| Purchase Price Allocation [Abstract] |
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| Goodwill |
460,972,000 |
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460,972,000 |
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220,827,000 |
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Ticket Monster [Member]
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| Consideration Transferred [Abstract] |
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| Business Combinations, cash transferred |
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99,942,000 |
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| Business Combination, issuance of Class A common stock |
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162,862,000 |
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| Receivable from seller for working capital adjustments in connection with acquisitions |
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(3,446,000) |
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| Business Combination, Consideration Transferred |
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259,358,000 |
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Cash and Equivalents |
24,768,000 |
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24,768,000 |
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| Business Combination, Current Assets, Receivables |
15,832,000 |
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15,832,000 |
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| Business Combination, Current Assets, Other |
1,264,000 |
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1,264,000 |
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| Business Combination, Current Assets, Prepaid Expense and Other Assets |
829,000 |
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829,000 |
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| Business Combination, Property, Plant, and Equipment |
5,944,000 |
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5,944,000 |
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| Goodwill |
220,592,000 |
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220,592,000 |
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| Business Combination, Other Noncurrent Assets |
3,033,000 |
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3,033,000 |
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| Business Combination, Assets |
381,356,000 |
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381,356,000 |
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| Business Combination, Current Liabilities, Accounts Payable |
5,951,000 |
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5,951,000 |
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| Business Combination, Accrued Merchant and Supplier Payables |
82,934,000 |
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82,934,000 |
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| Business Combinations, Accrued Expenses |
22,700,000 |
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22,700,000 |
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| Business Combination, Current Liabilities, Other |
3,482,000 |
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3,482,000 |
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| Business Combination, Deferred Tax Liabilities Noncurrent |
1,264,000 |
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1,264,000 |
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| Business Combination, Noncurrent Liabilities, Other |
5,667,000 |
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5,667,000 |
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| Business Combination, Liabilities |
121,998,000 |
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121,998,000 |
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| Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |
259,358,000 |
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259,358,000 |
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Ticket Monster [Member] | Subscriber Relationships [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
57,022,000 |
[1] |
57,022,000 |
[1] |
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Ticket Monster [Member] | Merchant Relationships [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
32,176,000 |
[1] |
32,176,000 |
[1] |
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Ticket Monster [Member] | Technology-Based Intangible Assets [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
571,000 |
[1] |
571,000 |
[1] |
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Ticket Monster [Member] | Trade names [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
19,325,000 |
[1] |
19,325,000 |
[1] |
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Ideeli [Member]
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| Consideration Transferred [Abstract] |
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| Business Combinations, cash transferred |
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42,339,000 |
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| Business Combination, Consideration Transferred, Liabilities Incurred |
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359,000 |
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| Business Combination, Consideration Transferred |
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42,698,000 |
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Cash and Equivalents |
79,000 |
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79,000 |
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| Business Combination, Current Assets, Receivables |
988,000 |
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988,000 |
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| Business Combination, Current Assets, Other |
572,000 |
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572,000 |
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| Business Combination, Current Assets, Prepaid Expense and Other Assets |
22,081,000 |
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22,081,000 |
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| Business Combination, Property, Plant, and Equipment |
8,173,000 |
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8,173,000 |
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| Goodwill |
5,379,000 |
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5,379,000 |
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| Business Combination, Deferred Tax Assets Noncurrent |
7,753,000 |
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7,753,000 |
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| Business Combination, Assets |
62,115,000 |
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62,115,000 |
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| Business Combination, Current Liabilities, Accounts Payable |
1,640,000 |
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1,640,000 |
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| Business Combination, Accrued Merchant and Supplier Payables |
4,092,000 |
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4,092,000 |
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| Business Combinations, Accrued Expenses |
9,118,000 |
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9,118,000 |
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| Business Combination, Current Liabilities, Other |
482,000 |
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482,000 |
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| Business Combination, Deferred Tax Liabilities Noncurrent |
332,000 |
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332,000 |
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| Business Combination, Noncurrent Liabilities, Other |
3,753,000 |
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3,753,000 |
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| Business Combination, Liabilities |
19,417,000 |
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19,417,000 |
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| Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |
42,698,000 |
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42,698,000 |
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Ideeli [Member] | Subscriber Relationships [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
5,490,000 |
[1] |
5,490,000 |
[1] |
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Ideeli [Member] | Brand Relationships [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
7,100,000 |
[1] |
7,100,000 |
[1] |
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Ideeli [Member] | Trade names [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
4,500,000 |
[1] |
4,500,000 |
[1] |
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Other Acquisitions [Member]
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| Consideration Transferred [Abstract] |
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| Business Combinations, cash transferred |
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3,477,000 |
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| Business Combination, Contingent Consideration |
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4,006,000 |
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| Business Combination, Consideration Transferred |
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7,483,000 |
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |
(52,000) |
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(52,000) |
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| Business Combination, Cash and Equivalents |
200,000 |
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200,000 |
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| Goodwill |
6,261,000 |
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6,261,000 |
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| Business Combination, Deferred Tax Liabilities Noncurrent |
(433,000) |
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(433,000) |
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| Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |
7,483,000 |
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7,483,000 |
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Other Acquisitions [Member] | Subscriber Relationships [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
560,000 |
[2] |
560,000 |
[2] |
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Other Acquisitions [Member] | Merchant Relationships [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
579,000 |
[2] |
579,000 |
[2] |
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Other Acquisitions [Member] | Technology-Based Intangible Assets [Member]
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| Purchase Price Allocation [Abstract] |
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| Business Combination, Intangible assets |
$ 568,000 |
[2] |
$ 568,000 |
[2] |
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Maximum [Member]
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| Business Acquisition [Line Items] |
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| Finite-Lived Intangible Asset, Useful Life |
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5 years 0 months 0 days |
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Maximum [Member] | Ticket Monster [Member]
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| Business Acquisition [Line Items] |
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| Finite-Lived Intangible Asset, Useful Life |
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5 years 0 months 0 days |
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Maximum [Member] | Ideeli [Member]
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| Business Acquisition [Line Items] |
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| Finite-Lived Intangible Asset, Useful Life |
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5 years 0 months 0 days |
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Maximum [Member] | Other Acquisitions [Member]
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| Business Acquisition [Line Items] |
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| Finite-Lived Intangible Asset, Useful Life |
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5 years 0 months 0 days |
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Minimum [Member]
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| Business Acquisition [Line Items] |
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| Finite-Lived Intangible Asset, Useful Life |
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1 year 0 months 0 days |
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Minimum [Member] | Ticket Monster [Member]
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| Business Acquisition [Line Items] |
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| Finite-Lived Intangible Asset, Useful Life |
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2 years 0 months 0 days |
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Minimum [Member] | Ideeli [Member]
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| Business Acquisition [Line Items] |
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| Finite-Lived Intangible Asset, Useful Life |
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3 years 0 months 0 days |
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Minimum [Member] | Other Acquisitions [Member]
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| Business Acquisition [Line Items] |
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| Finite-Lived Intangible Asset, Useful Life |
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3 years 0 months 0 days |
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