Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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

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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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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisition (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Acquisition (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Acquisition [Abstract]
Cash paid for acquisition		$ 8,692	$ 0	$ 0
Goodwill		$ 114,954	$ 112,446
Vertical Eden, LLC [Member]
Acquisition [Abstract]
Percentage of entity acquired	70.00%
Cash paid for acquisition	$ 3,300
Contingent consideration	1,500
Intangible assets	4,400
Goodwill	2,500
Non-controlling interest	$ 2,100
Vertical Eden, LLC [Member] \| Minimum [Member]
Acquisition [Abstract]
Useful life		3 years
Vertical Eden, LLC [Member] \| Maximum [Member]
Acquisition [Abstract]
Useful life		7 years