Note 13 - Related Party Transactions (Details Textual) - Interlink Electronics, Inc. [Member] - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Due from Related Parties	$ 1,000		$ 1,000
Due to Related Parties	0		$ 2,000
Administrative Services Provided to Related Party [Member]
Related Party Transaction, Amounts of Transaction	2,000	$ 2,000
Reimbursement of Expenses Paid By Related Party [Member]
Related Party Transaction, Amounts of Transaction	$ 6,000	$ 11,000