Related Party Transactions	12 Months Ended
Dec. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions	16. RELATED PARTY TRANSACTIONS The Company has a lease for its corporate headquarters from an affiliate wholly-owned by our CEO. Future minimum lease payments under this lease, which expires in 2018, is $0.2 million. For each of the years ended December 31, 2017 and 2016, total rental payments made were $0.2 million and $0.3 million, respectively. Rent expense for the years ended December 31, 2017 and 2016 was $0.2 million and $0.3 million, respectively. On February 23, 2009, Comstock Homes of Washington, L.C., a wholly-owned subsidiary of the Company, entered into a Services Agreement with Comstock Asset Management, L.C., an entity wholly-owned by the Chief Executive Officer, to provide services related to real estate development and improvements, legal, accounting, marketing, information technology and additional support services. For the years ended December 31, 2017 and 2016, the Company billed Comstock Asset Management, L.C. $1.1 million and $0.9 million, respectively, for services and out-of-pocket expenses incurred. Revenues from this arrangement are included within ‘Revenue – other’ within the accompanying consolidated statements of operations. As of December 31, 2017 and 2016, the Company was owed $145 and $132, respectively, under this contract, which is included in ‘Trade receivables’ in the accompanying consolidated balance sheets. On October 17, 2014, CGF entered into a subscription agreement with CDS pursuant to which CDS purchased membership interests in CGF for a principal amount of $10.0 million. Other purchasers who purchased interest in the private placement included members of the Company’s management and board of directors and other third party, accredited investors for an additional principal amount of $6.2 million. Simultaneously, on October 17, 2014, the Company entered into an unsecured promissory note with CGF whereby CGF made a loan to the Company in the initial principal amount of $10.0 million and a maximum capacity of up to $20.0 million. On December 18, 2014, the loan agreement was amended and restated to provide for a maximum capacity of $25.0 million. All of the other terms of the unsecured promissory note remained the same. The Company borrowed additional principal loan amount of $6.2 million under the Amended and Restated CGF promissory note bringing the total aggregate principal amount borrowed to $16.2 million. The CGF loan has a three-year term carrying a floating interest rate of LIBOR plus 9.75% with a 10% floor. The loan requires an annual principal repayment in the amount of 10% of the average outstanding balance and a monthly interest payment that will be made in arrears. See Note 10 for further discussion of transactions entered with CGF. On December 18, 2014, CGF entered into amended and restated subscription agreements with CDS, members of the Company’s management and board of directors and the other third party accredited investors who participated in the CGF Private Placement (the “Amended CGF Private Placement”). Under the Amended CGF Private Placement, in addition to the warrants described above, the Company entered into a commitment to grant 226,857 shares of our Class A common stock to the purchasers in the Amended CGF Private Placement. On May 12, 2015, the Company issued 226,857 un-registered shares of its Class A common stock to the purchasers in the Amended CGF Private Placement. The Amended CGF Private Placement was closed for additional investments on May 15, 2015. On December 29, 2015, the Company and Stonehenge Funding, L.C. (“Stonehenge”), an entity wholly owned by our Chief Executive Officer, entered into a Note Exchange and Subscription Agreement pursuant to which the note in the original principal amount of $4.5 million issued to the Company by Stonehenge was cancelled in its entirety and exchanged for 772,210 shares of the Company’s Series B Non-Convertible Preferred Stock, par value $0.01 per share and a stated value of $5.00 per share (the “Series B Preferred Stock”). The number of shares of Series B Preferred Stock received by Stonehenge in exchange for the note represented the principal amount outstanding plus accrued interest under the note as of December 29, 2015, which was $3.9 million. The holders of Series B Preferred Stock earn dividends at a rate of 8.75% per annum accruing from the effective date of the Note Exchange and Subscription Agreement. On December 29, 2015, the Company entered into a revolving line of credit promissory note with CGF II whereby CGF II made a loan to the Company in the initial principal amount of $5.0 million and a maximum amount available for borrowing of up to $10.0 million with a two-year term, which may be extended an additional year. The interest rate is 10% per annum, and interest payments will be accrued and paid in kind monthly for the first year, and then paid current monthly in arrears beginning December 31, 2016. On December 29, 2017, the CGF II loan was extended one year to December 29, 2018. As of December 31, 2017 and December 31, 2016, $3.6 million and $3.3 million, respectively, was outstanding in principal and accrued interest under the CGF II loan. On March 22, 2017, the Company entered into a Share Exchange Agreement with the holders of the Company’s Series B Preferred Stock pursuant to which the Company exchanged 858,210 shares of the Company’s Series B Preferred Stock for 772,210 shares of the Company’s newly created Series C Non-Convertible Preferred Stock, par value $0.01 per share and a stated value of $5.00 per share. The Series C Preferred Stock has a discretionary dividend feature, as opposed to the mandatory dividend feature in the Series B Preferred Stock. The Series B Preferred Stock, together with all accrued dividends earned through the conversion date, was retired upon re-acquisition and the fair value of the Series C Preferred Stock is recorded in ‘Stockholders’ equity’ in the accompanying consolidated balance sheets. The difference in fair value from the extinguishment of the Series B Preferred Stock and issuance of the Series C Preferred Stock of $1,011 was recorded in the accompanying consolidated statement of operations. For the year ended December 31, 2017, 15,663 shares of the Series B Preferred Stock, with a liquidation value of $78, were paid-in-kind, and were retired in the conversion. For the year ended December 31, 2016, 69,639 shares of the Series B Preferred Stock, with a liquidation value of $348, were paid in-kind, and are included in ‘Stockholders’ equity’ in the accompanying consolidated balance sheets. See Note 15 for a summary of the Comstock VII Private Placement and the Comstock VIII Private Placement which involved certain of our officers and directors and Note 10 to the consolidated financial statements for further description of the CGF Private Placement and the CGF II Private Placement. See Note 15 for a summary of the Comstock X Private Placement which involved a wholly owned entity of the Chief Executive Officer of the Company.

16. RELATED PARTY TRANSACTIONS

The Company has a lease for its corporate headquarters from an affiliate wholly-owned by our CEO. Future minimum lease payments under this lease, which expires in 2018, is $0.2 million.

For each of the years ended December 31, 2017 and 2016, total rental payments made were $0.2 million and $0.3 million, respectively. Rent expense for the years ended December 31, 2017 and 2016 was $0.2 million and $0.3 million, respectively.

On February 23, 2009, Comstock Homes of Washington, L.C., a wholly-owned subsidiary of the Company, entered into a Services Agreement with Comstock Asset Management, L.C., an entity wholly-owned by the Chief Executive Officer, to provide services related to real estate development and improvements, legal, accounting, marketing, information technology and additional support services. For the years ended December 31, 2017 and 2016, the Company billed Comstock Asset Management, L.C. $1.1 million and $0.9 million, respectively, for services and out-of-pocket expenses incurred. Revenues from this arrangement are included within ‘Revenue – other’ within the accompanying consolidated statements of operations. As of December 31, 2017 and 2016, the Company was owed $145 and $132, respectively, under this contract, which is included in ‘Trade receivables’ in the accompanying consolidated balance sheets.

On October 17, 2014, CGF entered into a subscription agreement with CDS pursuant to which CDS purchased membership interests in CGF for a principal amount of $10.0 million. Other purchasers who purchased interest in the private placement included members of the Company’s management and board of directors and other third party, accredited investors for an additional principal amount of $6.2 million.

Simultaneously, on October 17, 2014, the Company entered into an unsecured promissory note with CGF whereby CGF made a loan to the Company in the initial principal amount of $10.0 million and a maximum capacity of up to $20.0 million. On December 18, 2014, the loan agreement was amended and restated to provide for a maximum capacity of $25.0 million. All of the other terms of the unsecured promissory note remained the same. The Company borrowed additional principal loan amount of $6.2 million under the Amended and Restated CGF promissory note bringing the total aggregate principal amount borrowed to $16.2 million. The CGF loan has a three-year term carrying a floating interest rate of LIBOR plus 9.75% with a 10% floor. The loan requires an annual principal repayment in the amount of 10% of the average outstanding balance and a monthly interest payment that will be made in arrears. See Note 10 for further discussion of transactions entered with CGF.

On December 18, 2014, CGF entered into amended and restated subscription agreements with CDS, members of the Company’s management and board of directors and the other third party accredited investors who participated in the CGF Private Placement (the “Amended CGF Private Placement”). Under the Amended CGF Private Placement, in addition to the warrants described above, the Company entered into a commitment to grant 226,857 shares of our Class A common stock to the purchasers in the Amended CGF Private Placement. On May 12, 2015, the Company issued 226,857 un-registered shares of its Class A common stock to the purchasers in the Amended CGF Private Placement. The Amended CGF Private Placement was closed for additional investments on May 15, 2015.

On December 29, 2015, the Company and Stonehenge Funding, L.C. (“Stonehenge”), an entity wholly owned by our Chief Executive Officer, entered into a Note Exchange and Subscription Agreement pursuant to which the note in the original principal amount of $4.5 million issued to the Company by Stonehenge was cancelled in its entirety and exchanged for 772,210 shares of the Company’s Series B Non-Convertible Preferred Stock, par value $0.01 per share and a stated value of $5.00 per share (the “Series B Preferred Stock”). The number of shares of Series B Preferred Stock received by Stonehenge in exchange for the note represented the principal amount outstanding plus accrued interest under the note as of December 29, 2015, which was $3.9 million. The holders of Series B Preferred Stock earn dividends at a rate of 8.75% per annum accruing from the effective date of the Note Exchange and Subscription Agreement.

On December 29, 2015, the Company entered into a revolving line of credit promissory note with CGF II whereby CGF II made a loan to the Company in the initial principal amount of $5.0 million and a maximum amount available for borrowing of up to $10.0 million with a two-year term, which may be extended an additional year. The interest rate is 10% per annum, and interest payments will be accrued and paid in kind monthly for the first year, and then paid current monthly in arrears beginning December 31, 2016. On December 29, 2017, the CGF II loan was extended one year to December 29, 2018. As of December 31, 2017 and December 31, 2016, $3.6 million and $3.3 million, respectively, was outstanding in principal and accrued interest under the CGF II loan.

On March 22, 2017, the Company entered into a Share Exchange Agreement with the holders of the Company’s Series B Preferred Stock pursuant to which the Company exchanged 858,210 shares of the Company’s Series B Preferred Stock for 772,210 shares of the Company’s newly created Series C Non-Convertible Preferred Stock, par value $0.01 per share and a stated value of $5.00 per share. The Series C Preferred Stock has a discretionary dividend feature, as opposed to the mandatory dividend feature in the Series B Preferred Stock. The Series B Preferred Stock, together with all accrued dividends earned through the conversion date, was retired upon re-acquisition and the fair value of the Series C Preferred Stock is recorded in ‘Stockholders’ equity’ in the accompanying consolidated balance sheets. The difference in fair value from the extinguishment of the Series B Preferred Stock and issuance of the Series C Preferred Stock of $1,011 was recorded in the accompanying consolidated statement of operations. For the year ended December 31, 2017, 15,663 shares of the Series B Preferred Stock, with a liquidation value of $78, were paid-in-kind, and were retired in the conversion. For the year ended December 31, 2016, 69,639 shares of the Series B Preferred Stock, with a liquidation value of $348, were paid in-kind, and are included in ‘Stockholders’ equity’ in the accompanying consolidated balance sheets.

See Note 15 for a summary of the Comstock VII Private Placement and the Comstock VIII Private Placement which involved certain of our officers and directors and Note 10 to the consolidated financial statements for further description of the CGF Private Placement and the CGF II Private Placement.

See Note 15 for a summary of the Comstock X Private Placement which involved a wholly owned entity of the Chief Executive Officer of the Company.