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Significant Accounting Policies - Additional Information (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) State | Jun. 30, 2019 USD ($) Facility State Segment | Jan. 01, 2019 USD ($) | Dec. 31, 2018 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Number of states with aggregates business sales by destination | State | 27 | 27 |  |
Number of reportable segments | Segment |  | 3 |  |
Out of period expenses | $ 15,700 |  |  |
Operating lease, right of use asset | 487,360 | $ 487,360 |  |
Operating lease, liability | 489,943 | 489,943 |  |
Finance leases, liability | $ 10,363 | $ 10,363 |  | $ 10,879
Accounting Standards Update 2016-02 |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Operating lease, right of use asset |  |  | $ 502,500 |
Operating lease, liability |  |  | 501,600 |
Finance leases, right of use asset |  |  | 10,900 |
Finance leases, liability |  |  | $ 12,100 |
Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of quarries and yards | Facility |  | 300 |  |

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