Discontinued Operations (Details Narrative) - USD ($) $ in Thousands						12 Months Ended
	Jul. 16, 2016	Jul. 12, 2016	Apr. 21, 2016	Sep. 30, 2015	Jan. 02, 2015	Dec. 31, 2016	Dec. 31, 2015
Loan bears interest rate						3.15%
Stock-Based Compensation [Member]
Stock-based compensation expense included in USSI's net loss							$ 4
GridSense [Member]
Sale of business assets, gross sale price		$ 1,000
Indemnity escrow		100
Indemnity escrow to be released on January 7, 2017		50
Indemnity escrow to be released on July 7, 2017		50
Paid of accrued severance and other payroll costs		240
Gain on assets sold, net of transaction costs		$ 944
GridSense [Member] | Out Side Creditor [Member]
Amount of outside creditors claims settled						$ 459
GridSense [Member] | Creditor [Member]
Disbursed to outside creditors						47
U.S. Seismic Systems, Inc [Member]
Percentage of holdings on an as converted basis					95.70%
Invested in common shares				$ 7,584
Cash investment				5,355
Investment made by Acorn common shares				2,229
Additional purchase value of preferred stock				16,750
Loan to USSI				$ 10,058
Loan bears interest rate				8.00%
U.S. Seismic Systems, Inc [Member] | Series A-1 Preferred Stock [Member]
Preferred stock owned					9,376,401
GridSense [Member]
Accrued severance costs			$ 140
Accrual for lease commitment			$ 100
Cash available excluding escrow amounts						19
Remaining creditor claims						314
Percentage of borrow against certain accounts receivable	80.00%
Maximum accounts receivable balance borrowing base						$ 750
Line of credit, expiration date							Jul. 16, 2016
Debt interest rate, per month						1.25%
Utilized portion of accounts receivable line							$ 138