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Acquisitions (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 28, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Acquisition [Abstract] |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  | $ 31,745 | $ 8,692 |  | $ 0
Goodwill |  |  |  |  | $ 114,954 | $ 114,954 | [1] |
Useful life |  |  |  |  | 15 years |  |  |
Vertical Eden, LLC [Member] |  |  |  |  |  |  |  |
Acquisition [Abstract] |  |  |  |  |  |  |  |
Percentage of entity acquired |  |  | 30.00% | 70.00% |  |  |  |
Cash paid for acquisition |  |  | $ 12,500 | $ 3,300 |  |  |  |
Contingent consideration |  |  |  | 1,500 |  |  |  |
Goodwill |  |  |  | $ 2,500 |  |  |  |
Intangible assets |  |  | $ 4,400 |  |  |  |  |
Vertical Eden, LLC [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Acquisition [Abstract] |  |  |  |  |  |  |  |
Useful life |  |  |  |  | 3 years |  |  |
Vertical Eden, LLC [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Acquisition [Abstract] |  |  |  |  |  |  |  |
Useful life |  |  |  |  | 7 years |  |  |
Treviso, LLC [Member] |  |  |  |  |  |  |  |
Acquisition [Abstract] |  |  |  |  |  |  |  |
Percentage of entity acquired | 35.00% |  |  |  |  |  |  |
Purchase price | $ 21,000 |  |  |  |  |  |  |
Possible earnout | 1,000 |  |  |  |  |  |  |
Investment in equity investee | 12,600 |  |  |  |  |  |  |
Value of shares issued | $ 8,400 |  |  |  |  |  |  |
Number of shares issued (in shares) | 169,560 |  |  |  |  |  |  |
Share price (in dollars per share) | $ 49.54 |  |  |  |  |  |  |
Dr. Dana Beauty, LLC [Member] |  |  |  |  |  |  |  |
Acquisition [Abstract] |  |  |  |  |  |  |  |
Cash paid for acquisition |  | $ 7,000 |  |  |  |  |  |
Contingent consideration |  | $ 4,300 |  |  |  |  |  |
[1] | Goodwill was recast to reflect current period presentation by geographic region at December 31, 2016.

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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