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Acquisitions Pro Forma Financial Results (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Business Combinations [Abstract] |  |  |  |
Transaction costs not considered ongoing |  | $ 0 |  | $ 14,800
Pro forma net sales | $ 210,902 | 193,578 | $ 420,731 | 384,846
Pro forma income (loss) from continuing operations | (12,017) | (29,092) | (20,078) | (44,238)
Pro forma net income (loss) | $ (12,017) | $ (23,856) | $ (20,078) | $ (33,484)
Basic income (loss) per share (in dollars per share) | $ (0.43) | $ (1.06) | $ (0.73) | $ (1.62)
Diluted income (loss) per share (in dollars per share) | $ (0.43) | $ (1.06) | $ (0.73) | $ (1.62)

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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