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Operating Leases - Narrative (Detail) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 USD ($) ft² location | Dec. 31, 2018 USD ($) | Jan. 01, 2019 USD ($)
Area of operating lease | ft² | 37,829 |  |
Number of office space locations | location | 1 |  |
Operating lease, right-of-use asset | $ 2.8 |  |
Operating lease, liability | $ 3.5 |  |
Operating lease expense excluding rent |  | $ 0.4 |
Accounting Standards Update 2016-02 |  |  |
Operating lease, right-of-use asset |  |  | $ 2.9
Operating lease, liability |  |  | $ 3.6

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- Definition Lessee Leasing Agreements, Operating Leases, Area under Lease + References No definition available. + Details
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- Definition Lessee Leasing Agreements, Operating Leases, locations + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Details
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