Note 14 - Related Party Transactions (Details Textual) - USD ($)	6 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	May 01, 2014
Interlink Electronics, Inc. [Member]
Due from Related Parties	$ 6,000	$ 1,000	$ 6,000
Interlink Electronics, Inc. [Member] | Administrative Services Provided to Related Party [Member]
Revenue from Related Parties	31,000	33,000	61,000	$ 43,000
Interlink Electronics, Inc. [Member] | Reimbursement of Expenses Paid By Related Party [Member]
Related Party Transaction, Amounts of Transaction	4,000	13,000	14,000	56,000
Due to Related Parties	$ 0	$ 2,000	0
BKF Capital Group [Member] | License Agreement [Member]
Monthly License Fee Receivable					$ 1,200
Proceeds from License Fees Received			$ 2,400	$ 9,600