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Summary of Capital Expenditures Including Accrued Amounts (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Segment Reporting Information [Line Items] |  |  |  |
Total capital expenditures | $ 29,173 | $ 22,633 | $ 95,425 | $ 43,839
Safety |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total capital expenditures | 13,382 | 11,592 | 24,852 | 23,834
Community |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total capital expenditures | 1,272 | 7,680 | 8,419 | 13,120
Properties |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total capital expenditures | 12,708 | 2,463 | 53,702 | 5,557
Corporate and Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total capital expenditures | $ 1,811 | $ 898 | $ 8,452 | $ 1,328

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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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