14. Fair Value Disclosures (Details - Fair Value on a Recurring Basis) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets [Member] | Fair Value, Inputs, Level 1 [Member]
Assets	$ 109,103	$ 17,883
Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Trading Securities - Equity [Member]
Assets	109,103	17,140
Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Investment at fair value - warrants [Member]
Assets	0	0
Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Trading Securities - Debt [Member]
Assets		0
Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Investment at fair value - common stock [Member]
Assets		743
Assets [Member] | Fair Value, Inputs, Level 2 [Member]
Assets	2,752	94,600
Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Trading Securities - Equity [Member]
Assets	0	0
Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Investment at fair value - warrants [Member]
Assets	2,752	757
Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Trading Securities - Debt [Member]
Assets		93,843
Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Investment at fair value - common stock [Member]
Assets		0
Assets [Member] | Fair Value, Inputs, Level 3 [Member]
Assets	0	0
Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Trading Securities - Equity [Member]
Assets	0	0
Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Investment at fair value - warrants [Member]
Assets	0	0
Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Trading Securities - Debt [Member]
Assets		0
Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Investment at fair value - common stock [Member]
Assets		0
Liability [Member] | Fair Value, Inputs, Level 1 [Member]
Liabilities	0	0
Liability [Member] | Fair Value, Inputs, Level 1 [Member] | Series A Warrants [Member]
Liabilities	0	0
Liability [Member] | Fair Value, Inputs, Level 1 [Member] | Series B Warrants [Member]
Liabilities	0
Liability [Member] | Fair Value, Inputs, Level 1 [Member] | Embedded Derivative Liability [Member]
Liabilities	0	0
Liability [Member] | Fair Value, Inputs, Level 2 [Member]
Liabilities	6,640	3,568
Liability [Member] | Fair Value, Inputs, Level 2 [Member] | Series A Warrants [Member]
Liabilities	6,640	3,568
Liability [Member] | Fair Value, Inputs, Level 2 [Member] | Series B Warrants [Member]
Liabilities	0
Liability [Member] | Fair Value, Inputs, Level 2 [Member] | Embedded Derivative Liability [Member]
Liabilities	0	0
Liability [Member] | Fair Value, Inputs, Level 3 [Member]
Liabilities	79,069	17,974
Liability [Member] | Fair Value, Inputs, Level 3 [Member] | Series A Warrants [Member]
Liabilities	0	0
Liability [Member] | Fair Value, Inputs, Level 3 [Member] | Series B Warrants [Member]
Liabilities	52,341
Liability [Member] | Fair Value, Inputs, Level 3 [Member] | Embedded Derivative Liability [Member]
Liabilities	$ 26,728	$ 17,974