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Goodwill and Other Intangible Assets, Net - Components of Other Intangible Assets (Detail) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
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Jun. 30, 2019 | Dec. 31, 2018
Schedule of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Definite life, Accumulated Amortization | $ (17,849) | $ (15,251)
Definite life, Weighted- Average Remaining Life (Years) | 10 months 24 days | 1 year 2 months 12 days
Below market leases, Gross Amount | $ 941 | $ 941
Below market leases, Accumulated Amortization | (96) | (45)
Below market leases. Net Carrying Amount | 845 | 896
Gross Amount | 53,097 | 51,020
Net Carrying Amount | 35,248 | 35,769
Trademark and Trade Names [Member] |  |
Schedule of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Definite life, Gross Amount | 10,153 | 9,316
Definite life, Accumulated Amortization | (7,141) | (6,706)
Definite life, Net Carrying Amount | $ 3,012 | $ 2,610
Definite life, Weighted- Average Remaining Life (Years) | 6 months | 6 months
Non-contractual Customers [Member] |  |
Schedule of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Definite life, Gross Amount | $ 11,532 | $ 11,323
Definite life, Accumulated Amortization | (4,898) | (3,890)
Definite life, Net Carrying Amount | $ 6,634 | $ 7,433
Definite life, Weighted- Average Remaining Life (Years) | 1 year 4 months 24 days | 1 year 9 months 18 days
License Agreements (GSE) [Member] |  |
Schedule of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Definite life, Gross Amount | $ 4,981 | $ 4,981
Definite life, Accumulated Amortization | (2,792) | (2,292)
Definite life, Net Carrying Amount | $ 2,189 | $ 2,689
Definite life, Weighted- Average Remaining Life (Years) | 2 months 12 days | 4 months 24 days
Non-compete Agreements [Member] |  |
Schedule of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Definite life, Gross Amount | $ 6,267 | $ 6,267
Definite life, Accumulated Amortization | (1,949) | (1,469)
Definite life, Net Carrying Amount | $ 4,318 | $ 4,798
Definite life, Weighted- Average Remaining Life (Years) | 1 year 2 months 12 days | 1 year 4 months 24 days
Contractual Customers [Member] |  |
Schedule of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Definite life, Gross Amount | $ 2,483 | $ 1,452
Definite life, Accumulated Amortization | (973) | (849)
Definite life, Net Carrying Amount | $ 1,510 | $ 603
Definite life, Weighted- Average Remaining Life (Years) | 1 month 6 days | 1 month 6 days
Trademark and Trade Names [Member] |  |
Schedule of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Indefinite life, intangible assets | $ 11,350 | $ 11,350
License Agreements (GSE) [Member] |  |
Schedule of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items] |  |
Indefinite life, intangible assets | $ 5,390 | $ 5,390

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