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Subsequent Events - Additional Information (Detail) | 1 Months Ended |
--- | --- | ---
Apr. 30, 2019 USD ($) ft² | Mar. 31, 2019 USD ($) ft²
Subsequent Event [Line Items] |  |
Estimated lease payments |  | $ 14,528,257
California | Corporate Headquarters In Pasadena |  |
Subsequent Event [Line Items] |  |
Office space leases, in square feet | ft² |  | 8,500
Subsequent Event | Colorado Owner, LLC | California | Corporate Headquarters In Pasadena |  |
Subsequent Event [Line Items] |  |
Lease term | 91 months |
Office space leases, in square feet | ft² | 24,000 |
Lease payments, commencement date | Nov. 01, 2019 |
Estimated lease payments | $ 8,800,000 |
Expected leasehold improvements, net of tenant improvement allowances | $ 4,500,000 |
Lease term expiration, option to extend for renewal lease term | Pursuant to the lease, within twelve to fifteen months of the expiration of the term, the Company has the option to extend the lease for one additional five-year term, with certain annual increases in base rent. |
Lease extend term | 5 years |

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- Definition A general description of the nature of the existing leasing arrangements of a lessee for all operating leases including, but not limited to: (1) rental escalation clauses; (2) renewal or purchase options; (3) guarantees or indemnities, if any, (4) restrictions imposed by lease arrangements; (5) unusual provisions or conditions; (6) contingent rentals, if any; and (7) lease expiration dates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84164451&loc=d3e36991-112694 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1) -URI http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697 + Details
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