Commitments and Contingencies Narrative (Details)			12 Months Ended
	May 01, 2020 USD ($) $ / shares shares	Nov. 07, 2019 USD ($)	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($)	Jan. 12, 2018 $ / shares shares
Loss Contingencies [Line Items]
Lessee, Operating Lease, Term of Contract				3 years
Lessee, Operating Lease, Renewal Term				5 years
Gain (Loss) on Termination of Lease			$ 0	$ 21,000	$ 0
Sublease Income			$ 0	105,000	160,000
Number of office spaces			2
Proceeds from sale of BriefCam, Ltd.			$ 0	41,000	9,778,000
Loss on debt extinguishment			0	348,000	1,189,000
Proceeds from Issuance of Common Stock		$ 8,200,000	$ 0	$ 8,201,000	0
Warrant shares (in shares) | shares			414,286	1,339,286
Note payable			$ 1,800,000	$ 0
Operating Lease, reduction of right of use asset and leases liability			433,000
Depreciation and amortization			1,518,000	$ 1,526,000	$ 2,366,000
Facility Closing
Loss Contingencies [Line Items]
Operating Leases, Rent Expense			637,000
Depreciation and amortization			$ 280,000
ESW Holdings, Inc.
Loss Contingencies [Line Items]
Term loan, at face value	$ 1,833,000
Basis spread on variable rate	4.00%
Class Of Warrant Or Right, Additional Payments Potentially Required	$ 150,000
Debt Instrument, Interest Rate, Effective Percentage	7.25%
Note payable	$ 1,715,000
Notes payable, fair value	$ 1,800,000
ESW Holdings, Inc.
Loss Contingencies [Line Items]
Warrant shares (in shares) | shares	925,000		0	925,000		925,000
Warrant, exercise price (in dollars per share) | $ / shares	$ 1.96					$ 1.96
Cash settlement value of warrant instrument	$ 1,983,000
Minneapolis Headquarters
Loss Contingencies [Line Items]
Restructuring costs and asset impairment charges				$ 177,000