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Recent Accounting Pronouncements - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
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Mar. 31, 2019 | Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Variable lease, payment | $ 18,845 |
Accounting Standards Update 2016-02 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Operating lease, right-of-use asset |  | $ 4,507
Operating lease, liability |  | $ 4,507

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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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- Definition Amount of cash outflow for variable lease payment excluded from lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977 + Details
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