Income Taxes and State LLC Fees (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Line Items]
Operating loss carryforward expiration	Dec. 31, 2030
California Franchise Tax Board [Member]
Income Tax Disclosure [Line Items]
Gross receipt fee based on turnover	$ 12,000
MP Securities [Member] | California Franchise Tax Board [Member]
Income Tax Disclosure [Line Items]
Gross receipt fee based on turnover	6,000
MP Realty [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforwards	$ 430,000	$ 407,000
Valuation allowance, percentage	100.00%	100.00%
MP Realty [Member] | California Franchise Tax Board [Member]
Income Tax Disclosure [Line Items]
Gross receipt fee based on turnover	$ 800	$ 800