Supplemental Balance Sheet Information	9 Months Ended
Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Supplemental Balance Sheet Information	Note 4 — Supplemental Balance Sheet Information Additional supplemental balance sheet information is provided as follows: Property and equipment, as of December 31, 2020, consisted of quantitative trading software purchased from GEH Capital, LLC (“GEH”), a related party. The asset was depreciated on a straight-line basis over a useful life of three years. Net property and equipment of $1.5 million, as of Dec 31, 2020, consisted of the purchased cost of $1.7 million, less accumulated depreciation of $0.2 million. The residual values, useful life and depreciation method were reviewed at each financial year end to ensure that the amount, method and period of depreciation are consistent with previous estimates and the expected pattern of consumption of the future economic benefits embodied in the items of property and equipment. See Note 13 – Related Party Transactions for more information relating to the software purchase. An item of property, plant and equipment is derecognized upon disposal or when no future economic benefits are expected from its use or disposal. The difference between the net disposal proceeds, if any, and the net carrying amount is recognized in the statement of operations. In January 2021, AEC received notice from ESW that Adara had defaulted on its obligations under the ESW Loan Agreement. On April 22, 2021, AEC filed a voluntary petition for relief under Chapter 11 of the United States Bankruptcy Code in the Bankruptcy Court for the District of Delaware. As part of AEC’s prepackaged Chapter 11 plan of reorganization, which became effective on June 15, 2021, ESW acquired the Company’s interest in the quantitative trading software, and GlassBridge received a license to use the software in connection with the sports industry. Total assets, as of September 30, 2021, include a $12.8 million investment in Arrive. Historically, we accounted for such investments under the cost method of accounting. The adoption of ASU No. 2016-01 in the first quarter of 2018 effectively eliminated the cost method of accounting, and the carrying value of this investment is written down, or impaired, to fair value when a decline in value is considered to be other-than-temporary. Our strategic investment in equity securities does not have a readily determinable fair value; therefore, the new guidance was adopted prospectively. As of September 30, 2021, there were no indicators of impairment for this investment. The Company will assess the investment for potential impairment, quarterly. Other assets of $0.2 million, as of September 30, 2021, include a separate investment in Arrive. The Company uses the same method of accounting for this investment as its other investment in Arrive, described in the prior paragraph. Other current liabilities, as of September 30, 2021, include accruals for payroll expense of $0.7 million. Other current liabilities, as of December 31, 2020, include accruals for interest expense of $1.2 million, of which $0.1 million is related party. As of December 31, 2020, the Company had a note payable of $11.0 million to ESW. As part of AEC’s prepackaged Chapter 11 plan of reorganization which became effective on June 15, 2021, GlassBridge received a release of its guaranty obligations to ESW, and the note payable is no longer a liability of the Company. As of December 31, 2020, the Company had a $0.4 million loan (“Bank Loan”) from Signature Bank (the “Bank”), pursuant to the Paycheck Protection Program (the “PPP”). On June 30, 2021, the Company received notice that the $0.4 million Bank Loan from the Bank was forgiven in full. Stock purchase agreements as of December 31, 2020 include notes payable of $12.1 million and $5.5 million to George E. Hall and Joseph A. De Perio, respectively, for shares of SportBLX common stock. On July 31, 2021, Messrs. Hall and De Perio agreed to accept $2,354,736 and $1,060,264, respectively, from the Company in satisfaction of its obligations to them and the Company’s obligations under the Stock Purchase Agreement are paid in full as of the period ending September 30, 2021. See Note 13 – Related Party Transactions for additional information.

Supplemental Balance Sheet Information

9 Months Ended

Sep. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Note 4 — Supplemental Balance Sheet Information

Additional supplemental balance sheet information is provided as follows:

Property and equipment, as of December 31, 2020, consisted of quantitative trading software purchased from GEH Capital, LLC (“GEH”), a related party. The asset was depreciated on a straight-line basis over a useful life of three years. Net property and equipment of $1.5 million, as of Dec 31, 2020, consisted of the purchased cost of $1.7 million, less accumulated depreciation of $0.2 million. The residual values, useful life and depreciation method were reviewed at each financial year end to ensure that the amount, method and period of depreciation are consistent with previous estimates and the expected pattern of consumption of the future economic benefits embodied in the items of property and equipment. See Note 13 – Related Party Transactions for more information relating to the software purchase.

An item of property, plant and equipment is derecognized upon disposal or when no future economic benefits are expected from its use or disposal. The difference between the net disposal proceeds, if any, and the net carrying amount is recognized in the statement of operations.

In January 2021, AEC received notice from ESW that Adara had defaulted on its obligations under the ESW Loan Agreement. On April 22, 2021, AEC filed a voluntary petition for relief under Chapter 11 of the United States Bankruptcy Code in the Bankruptcy Court for the District of Delaware. As part of AEC’s prepackaged Chapter 11 plan of reorganization, which became effective on June 15, 2021, ESW acquired the Company’s interest in the quantitative trading software, and GlassBridge received a license to use the software in connection with the sports industry.

Total assets, as of September 30, 2021, include a $12.8 million investment in Arrive. Historically, we accounted for such investments under the cost method of accounting. The adoption of ASU No. 2016-01 in the first quarter of 2018 effectively eliminated the cost method of accounting, and the carrying value of this investment is written down, or impaired, to fair value when a decline in value is considered to be other-than-temporary. Our strategic investment in equity securities does not have a readily determinable fair value; therefore, the new guidance was adopted prospectively. As of September 30, 2021, there were no indicators of impairment for this investment. The Company will assess the investment for potential impairment, quarterly.

Other assets of $0.2 million, as of September 30, 2021, include a separate investment in Arrive. The Company uses the same method of accounting for this investment as its other investment in Arrive, described in the prior paragraph.

Other current liabilities, as of September 30, 2021, include accruals for payroll expense of $0.7 million. Other current liabilities, as of December 31, 2020, include accruals for interest expense of $1.2 million, of which $0.1 million is related party.

As of December 31, 2020, the Company had a note payable of $11.0 million to ESW. As part of AEC’s prepackaged Chapter 11 plan of reorganization which became effective on June 15, 2021, GlassBridge received a release of its guaranty obligations to ESW, and the note payable is no longer a liability of the Company.

As of December 31, 2020, the Company had a $0.4 million loan (“Bank Loan”) from Signature Bank (the “Bank”), pursuant to the Paycheck Protection Program (the “PPP”). On June 30, 2021, the Company received notice that the $0.4 million Bank Loan from the Bank was forgiven in full.

Stock purchase agreements as of December 31, 2020 include notes payable of $12.1 million and $5.5 million to George E. Hall and Joseph A. De Perio, respectively, for shares of SportBLX common stock. On July 31, 2021, Messrs. Hall and De Perio agreed to accept $2,354,736 and $1,060,264, respectively, from the Company in satisfaction of its obligations to them and the Company’s obligations under the Stock Purchase Agreement are paid in full as of the period ending September 30, 2021. See Note 13 – Related Party Transactions for additional information.