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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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

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Amount of liabilities assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Business Acquisitions Purchase Price Allocation (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Goodwill	$ 41,871us-gaap_Goodwill	$ 38,500us-gaap_Goodwill	$ 37,750us-gaap_Goodwill
Two Bright Lights, Inc.
Business Acquisition [Line Items]
Current assets	6
Other long term assets	7
Property and equipment	24
Goodwill	4,350
Deferred revenue and other liabilities	(68)
Total purchase price	5,300
Capitalized software \| Two Bright Lights, Inc.
Business Acquisition [Line Items]
Finite-lived intangibles	47
Trade names \| Two Bright Lights, Inc.
Business Acquisition [Line Items]
Finite-lived intangibles	36
Media content \| Two Bright Lights, Inc.
Business Acquisition [Line Items]
Finite-lived intangibles	325
Customer relationships \| Two Bright Lights, Inc.
Business Acquisition [Line Items]
Finite-lived intangibles	$ 573