Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Increase (decrease) in valuation allowance	$ (4,005,000)	$ 25,040,000
Net operating loss carryforwards, permanent loss of tax benefit	30,880,000
Unrecognized tax benefits, income tax penalties and interest accrued	0	0
Unrecognized tax benefits, income tax penalties and interest expense	0	0
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	110,401,000	$ 108,497,000
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 94,223,000
Oblong Industries
Operating Loss Carryforwards [Line Items]
Noncontrolling interest, ownership percentage by parent	75.00%