Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Cash Flows from Operating Activities:
Net income (loss)	$ (3.1)	$ (3.5)	$ 6.0	$ (18.5)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization			0.3	0.5
Gain on Chapter 11 reorganization			(13.8)
Bank Loan forgiveness			(0.4)
Loss on sale of investments			0.2	1.8
Defined benefit plan adjustment				8.5
Changes in operating assets and liabilities			3.2	2.3
Net cash used in operating activities			(4.5)	(5.4)
Cash Flows from Investing Activities:
Proceeds from sale of unsecured claims from related party pursuant to Chapter 11 reorganization			0.5
Collection of notes receivable from related party pursuant to Chapter 11 reorganization			0.7
Proceeds received for the assignment of related party notes receivable and accrued interest receivable to Fintech Debt Corp			0.4
Purchase of property and equipment				(1.7)	$ (1.7)
Investment in Securities				(1.6)
Disbursement related to disposal group				(1.8)
Proceeds from fund distribution				2.0
Net cash provided by (used in) investing activities			1.6	(3.1)
Cash Flows from Financing Activities:
Proceeds from ESW debtor-in-possession note payable			0.3
Proceeds from GHI LLC note payable			3.2
Repayment of Stock Purchase Agreement Notes Payable			(3.4)
Proceeds from sale of warrants			0.2
Proceeds from advance from related party			0.1
Advance from bankruptcy trust subject to clawback			2.0
Proceeds from Orix note payable				16.0
Repayment of Orix note payable				(16.0)
Proceeds from ESW note payable				5.4
Proceeds from Bank Loan				0.4
Proceeds from other related parties notes payable				0.4
Net cash provided by financing activities			2.4	6.2
Net change in cash and cash equivalents			(0.5)	(2.3)
Cash, cash equivalents and restricted cash — beginning of period			1.8	5.5	5.5
Cash, cash equivalents and restricted cash — end of period (a)	1.3	3.2	1.3	3.2	1.8
Supplemental disclosures of cash paid (received) during the period:
Income taxes (net of refunds received)			(0.6)	(0.6)
Interest expense			0.6
Non-cash investing and financing activities during the period: ESW note payable issued for the following:
Acquisition of Orix PTP Holdings, LLC’s 201 shares of AEC common stock				4.6
Payment of accrued interest to Orix PTP Holdings, LLC				0.8
Payment of deferred financing costs				0.2
Total non-cash related to ESW note payable				5.6
Disposition of AAM to a related party including Orix notes payable				10.5
Extinguishment of ESW note payable in Chapter 11 reorganization			(11.0)
Extinguishment of debtor-in-possession loan in Chapter 11 reorganization			(0.3)
Forgiveness of Bank Loan			(0.4)
Extinguishment of Stock Purchase Agreement Notes Payable			(14.2)
Recognition of related party debt and accrued interest payable to Fintech Debt Corp.			4.6
Total non-cash investing and financing activities during the period			21.3	16.1
Current Assets:
Cash and cash equivalents	1.3	2.0	1.3	2.0	$ 1.3
Restricted cash in other current assets		1.2		1.2
Total cash, cash equivalents and restricted cash	$ 1.3	$ 3.2	$ 1.3	$ 3.2