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Segment Information - Additional Information (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) Segment | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of operating business segments | Segment | 3 |  |
Amount of revenue from major customer of total revenue | $ 373,528 | $ 361,788 | $ 358,402
Major Customer [Member] | Sales Revenue, Net [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Amount of revenue from major customer of total revenue | $ 167,300 | $ 161,800 | $ 164,400
Major Customer [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from next largest customer, percentage of total revenue | 45.00% | 45.00% | 46.00%
Puerto Rico [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from next largest customer, percentage of total revenue | 9.00% | 10.00% | 11.00%

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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