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Nature of Business and Basis of Presentation - Summary of Effect of Adopting Topic 842 on Consolidated Balance Sheet (Details) - USD ($) | Mar. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Prepaid expenses |  | $ 21,358,000 |  | $ 17,722,000
Property and equipment, net |  | 1,023,182,000 |  | 894,953,000
Operating lease right-of-use assets, net |  | 163,044,000 |  |
Intangible assets, net |  | 151,998,000 |  | 141,128,000
Operating lease liability |  | 178,494,000 |  |
Other long-term obligations |  | 1,482,000 |  | 4,801,000
Accumulated deficit |  | (140,651,000) |  | $ (120,361,000)
Prior to Adoption [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Prepaid expenses |  |  | $ 17,722,000 |
Property and equipment, net |  |  | 894,953,000 |
Intangible assets, net |  |  | 141,128,000 |
Other long-term obligations |  |  | 4,801,000 |
Accumulated deficit |  |  | (120,361,000) |
ASU 842 [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Prepaid expenses |  |  | 17,528,000 |
Property and equipment, net |  |  | 897,456,000 |
Operating lease right-of-use assets, net |  | 0 | 140,715,000 |
Intangible assets, net |  |  | 138,625,000 |
Operating lease liability |  | $ 0 | 155,878,000 |
Other long-term obligations |  |  | 1,716,000 |
Accumulated deficit |  |  | (132,633,000) |
ASU 842 [Member] | Effect of Adoption [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Prepaid expenses | [1] |  | (194,000) |
Property and equipment, net | [1] |  | 2,503,000 |
Operating lease right-of-use assets, net | [1] |  | 140,715,000 |
Intangible assets, net | [1] |  | (2,503,000) |
Operating lease liability | [1] |  | 155,878,000 |
Other long-term obligations | [1] |  | (3,085,000) |
Accumulated deficit | [1] |  | $ (12,272,000) |
[1] | Prepaid expenses, favorable lease intangible and deferred lease expense included in other long-term obligations were reclassed to the related right-of-use asset upon adoption of Topic 842.

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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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