Income Taxes - Reconciliation of the Expected Income Tax (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
U. S. statutory income tax rate	21.00%	21.00%	21.00%
Non-deductible expenses:
Non-deductible stock awards	0.00%	(0.80%)	(0.60%)
Non-deductible impairment or disposal of goodwill	(4.30%)	(2.70%)	(10.50%)
Non-deductible acquisition costs	(0.30%)	(0.10%)	(0.70%)
Non-deductible officers’ compensation	(0.10%)	(0.10%)	(0.60%)
Non-deductible interest expenses	(0.30%)	(0.10%)	(0.20%)
Additional tax cost basis on disposal of subsidiary	0.00%	0.00%	0.40%
Expiration of and disposal of subsidiary NOL carryovers	(0.50%)	0.00%	(0.50%)
Change in state tax rates due to change in state apportionment	(0.20%)	(1.10%)	1.10%
Increase in valuation allowance	(23.30%)	(19.80%)	(10.30%)
Tax rate differential(state and foreign)	3.10%	3.70%	5.00%
Non-taxable gain on remeasurement of previously held equity interest Energica	0.00%	1.40%	0.00%
Non-taxable gain Non-deductible (loss) on contingent consideration	6.60%	0.00%	0.90%
Others	0.80%	(0.60%)	(0.60%)
Effective income tax rate	2.50%	0.80%	4.40%