Stockholders' Equity - Schedule of Share-based Compensation, Activity (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Note 9 - Stockholders' Equity (Details) - Summary of Inactive Plans [Line Items]
Options Outstanding, Balance	409,878	447,666
Options Outstanding, Granted
Options Outstanding, Exercised	(1,800)	(6,000)
Options Outstanding, Cancelled	(19,468)	(31,788)
Options Outstanding, Balance	388,600	409,878
2008 Stock Option Plan [Member]
Note 9 - Stockholders' Equity (Details) - Summary of Inactive Plans [Line Items]
Options Outstanding, Balance	395,545	430,000
Options Outstanding, Granted
Options Outstanding, Exercised	(1,800)	(6,000)
Options Outstanding, Cancelled	(13,134)	(28,455)
Options Outstanding, Balance	380,611	395,545
2005 Stock Option Plan [Member]
Note 9 - Stockholders' Equity (Details) - Summary of Inactive Plans [Line Items]
Options Outstanding, Balance	14,000	17,333
Options Outstanding, Granted
Options Outstanding, Exercised
Options Outstanding, Cancelled	(6,334)	(3,333)
Options Outstanding, Balance	7,666	14,000
Supplemental Stock Option Agreement [Member]
Note 9 - Stockholders' Equity (Details) - Summary of Inactive Plans [Line Items]
Options Outstanding, Balance	333	333
Options Outstanding, Granted
Options Outstanding, Exercised
Options Outstanding, Cancelled
Options Outstanding, Balance	333	333