Note 7 - Shareholders' Equity Option Rollforward (Details Narrative) - USD ($)	9 Months Ended
	Sep. 27, 2015	Dec. 31, 2014
Note 8 - Shareholders Equity Option Rollforward Details Narrative
Options outstanding	2,290,704	2,056,122
Options outstanding - weighted average exercise price	$ 6.12	$ 6.66
Options outstanding - weighted average remaining contractual term (years)	3 years 223 days
Options outstanding - aggregate intrinsic value	$ 1,985,000
Options granted	311,250
Options granted - weighted average exercise price	$ 3.83
Options exercised	8,502
Options exercised - weighted average exercise price	$ 3.37
Options forfeited or expired	68,166
Options forfeited or expired - weighted average exercise price	$ 12.21
Options vested and expected to vest	2,151,104
Options vested and expected to vest - weighted average exercise price	$ 6.27
Options vested and expected to vest - weighted average remaining contractual term (years)	3 years 172 days
Options vested and expected to vest - aggregate intrinsic value	$ 1,763,000
Options Exercisable	1,387,971
Options exercisable - weighted average exercise price	$ 5.10
Options exercisable - weighted average remaining contractual term (years)	2 years 252 days
Options exercisable - aggregate intrinsic value	$ 1,184,000