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Acquisitions - Narrative (Details) - USD ($) $ in Thousands | Apr. 02, 2018 | Mar. 12, 2018 | Apr. 28, 2017 | Jul. 31, 2015 | Jun. 30, 2018
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General Pet Supply |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business combination, purchase price | $ 24,500 |  |  |  |
Purchase price exceeded the estimated fair value of assets acquired |  |  |  |  | $ 14,100
Bell Nursery Holdings, LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business combination, purchase price |  | $ 61,000 |  |  |
Contingent consideration |  | 10,000 |  |  |
Purchase price exceeded the estimated fair value of assets acquired |  | $ 11,600 |  |  |
K&H Manufacturing |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business combination, purchase price |  |  | $ 48,000 |  |
Purchase price exceeded the estimated fair value of assets acquired |  |  | 41,800 |  |
Other intangible assets |  |  | 29,200 | $ 29,200 |
Goodwill |  |  | $ 12,000 | $ 11,968 |

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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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