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Commitments and Contingencies - Litigation (Details) |  |  |  |  |  | 1 Months Ended
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Jul. 21, 2017 suit | Jul. 14, 2017 suit | Jul. 10, 2017 suit | Mar. 30, 2017 subsidiary | Mar. 24, 2017 officer | Jul. 31, 2017 suit
David Buehring Case |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency, number of defendants | officer |  |  |  |  | 2 |
Gardner Case |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency, new claims filed, number | suit | 1 | 1 | 1 |  |  | 3
Mattress Firm Case |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency, number of defendants | subsidiary |  |  |  | 2 |  |

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- Definition The total number of new claims filed pertaining to a loss contingency during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 + Details
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