8. Income Taxes (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Capital loss carryforward	$ 11,155
Capital loss carryforward beginning expiration date	Dec. 31, 2029
Foreign tax credit	$ 50,973
Foreign tax credit beginning expiration date	Dec. 31, 2021
Unrecognized tax benefit	$ 731	$ 731
Operating loss carryforward deferred tax asset	571
Deferred tax asset	115,766	115,448
Unrealized Gain on Investment in Veritone [Member]
Deferred tax liability	590
Unrealized Gain on Investment in LF Equity [Member]
Deferred tax liability	37,706
Unrealized Loss on Investment in Veritone [Member]
Deferred tax asset		$ 538
Federal [Member]
Net operating loss carryforward	$ 274,283
NOL beginning expiration dates	Dec. 31, 2026
State and Local Jurisdiction [Member]
Net operating loss carryforward	$ 13,809
NOL beginning expiration dates	Dec. 31, 2028