Supplemental Balance Sheet Information	3 Months Ended
Mar. 31, 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 consists of quantitative trading software purchased from GEH Capital, LLC (“GEH”), a related party. The asset is depreciated on a straight-line basis over a useful life of three years. Net property and equipment of $1.3 million as of March 31, 2021 consists of the purchased cost of $1.7 million less accumulated depreciation of $0.4 million. The residual values, useful life and depreciation method are 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. See Note 14 – Subsequent Events for more information. Total assets of as of March 31, 2021 include a $12.8 million investment in Arrive LLC (“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 March 31, 2021, there were no indicators of impairment for this investment. The Company will assess the investment for potential impairment, quarterly. Other assets of $0.4 million, as of March 31, 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 March 31, 2021, include accruals for payroll expense of $0.6 million and interest expense of $1.8 million, of which $0.2 is related party. 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 March 31, 2021 and December 31, 2020, the Company has a note payable of $11.0 million to ESW Holdings, LLC (“ESW”) and a $0.4 million loan (“Bank Loan”) from Signature Bank (the “Bank”) pursuant to the Paycheck Protection Program (the “PPP”). See Note 6 – Debt for additional information on the ESW note payable and the Bank Loan. Stock purchase agreements as of March 31, 2021 and December 31, 2020 include notes payable of $12.1 million and $5.5 million to George E. Hall and Joseph A. De Perio, respectively, in conjunction with the Stock Purchase Agreement for shares of SportBLX common stock. See Note 13 – Related Party Transactions for additional information.

Supplemental Balance Sheet Information

3 Months Ended

Mar. 31, 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 consists of quantitative trading software purchased from GEH Capital, LLC (“GEH”), a related party. The asset is depreciated on a straight-line basis over a useful life of three years. Net property and equipment of $1.3 million as of March 31, 2021 consists of the purchased cost of $1.7 million less accumulated depreciation of $0.4 million. The residual values, useful life and depreciation method are 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. See Note 14 – Subsequent Events for more information.

Total assets of as of March 31, 2021 include a $12.8 million investment in Arrive LLC (“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 March 31, 2021, there were no indicators of impairment for this investment. The Company will assess the investment for potential impairment, quarterly.

Other assets of $0.4 million, as of March 31, 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 March 31, 2021, include accruals for payroll expense of $0.6 million and interest expense of $1.8 million, of which $0.2 is related party. 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 March 31, 2021 and December 31, 2020, the Company has a note payable of $11.0 million to ESW Holdings, LLC (“ESW”) and a $0.4 million loan (“Bank Loan”) from Signature Bank (the “Bank”) pursuant to the Paycheck Protection Program (the “PPP”). See Note 6 – Debt for additional information on the ESW note payable and the Bank Loan.

Stock purchase agreements as of March 31, 2021 and December 31, 2020 include notes payable of $12.1 million and $5.5 million to George E. Hall and Joseph A. De Perio, respectively, in conjunction with the Stock Purchase Agreement for shares of SportBLX common stock. See Note 13 – Related Party Transactions for additional information.