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Litigation - Additional Information (Detail) $ in Thousands |  | 9 Months Ended
--- | --- | ---
Nov. 08, 2016 USD ($) | Oct. 08, 2016 Lawsuits
Loss Contingencies [Line Items] |  |
Alleged complaints |  | 24
Class and / or Collective action treatment |  |
Loss Contingencies [Line Items] |  |
Alleged complaints |  | 18
Individual claims and do not seek class or collective action treatment |  |
Loss Contingencies [Line Items] |  |
Alleged complaints |  | 6
Subsequent Event | Connecticut Class Action |  |
Loss Contingencies [Line Items] |  |
Litigation settlement amount including attorney's fees | $ | $ 1,250 |

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- Definition Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
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