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Schedule of Other Assets (Parenthetical) (Detail) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Schedule of Other Assets [Line Items] |  |
Debt issuance costs, accumulated amortization | $ 2,711 | $ 1,633
Intangible lease value |  |
Schedule of Other Assets [Line Items] |  |
Intangible assets, accumulated amortization | 6,920 | 4,990
Other intangible assets |  |
Schedule of Other Assets [Line Items] |  |
Intangible assets, accumulated amortization | $ 2,625 | $ 1,421

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- Definition Debt Issuance Costs Associated with Revolving Credit Facility, Accumulated Amortization + References No definition available. + Details
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- Definition Schedule of Other Assets [Line Items] + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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