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v3.19.2

Consolidation of Variable Interest Entities - Additional Information (Detail) - USD ($) | 1 Months Ended |
--- | --- | ---
Oct. 31, 2017 | Aug. 31, 2016 | Oct. 31, 2016
Comstock Investors X, L.C. [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Aggregate capital raise | $ 19,500,000 |  |
Cumulative, compounded, preferred return rate |  | 6.00% |
Additional capital raised | $ 5,000,000 |  |
Warrants issued | 50,000 |  |
Aggregate fair value | $ 81,000 |  |
Comstock Investors X, L.C. [Member] | Class A [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Number of warrants issued |  | 150,000 |
Aggregate fair value of warrants for investors |  | $ 258,000 |
Comstock Investors X, L.C. [Member] | Private Placement [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Aggregate capital raise |  | 14,500,000 | $ 14,500,000
Comstock Investors X, L.C. [Member] | Subsidiaries [Member] | Private Placement [Member] | Class B [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Initial aggregate principal amount up to capital raise |  | $ 5,000,000 |
Comstock Development Services LC [Member] | Private Placement [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Aggregate capital raise |  |  | $ 9,500,000

X
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- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 25 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=109262497&loc=d3e20148-110875 + Details
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