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CONTINGENCIES (Detail) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 22, 2015 | Jun. 30, 2016 USD ($) | Dec. 31, 2017 USD ($) claim
Commitments and Contingencies Disclosure [Abstract] |  |  |
Number of legal proceedings that might have a material effect on the results of operations | claim |  |  | 0
Period to amend complaint or file notice | 30 days |  |
Civil money penalty |  | $ 1,000 |
Pending Litigation | SEPTA Second Amended Complaint |  |  |
Loss Contingencies [Line Items] |  |  |
Indemnification costs |  |  | $ 645

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- Definition The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. + 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=82911808&loc=d3e14326-108349 + Details
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