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Nature of Business - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2016 Location Office
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 338
Number of offices opened | Office | 7
Alabama [Member] |
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 49
Georgia [Member] |
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 8
New Mexico [Member] |
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 18
North Carolina [Member] |
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 36
Oklahoma [Member] |
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 28
South Carolina [Member] |
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 72
Tennessee [Member] |
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 21
Texas [Member] |
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 98
Virginia [Member] |
Nature Of Business And Significant Accounting Policies [Line Items] |
Number of locations | 8

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