Note 15 - Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Three Months Ended March 31,
Revenue by Country	2015		2014
United States	$	751,400	$	551,000
Germany		67,100		96,400
Brazil		169,500		157,000
Other Countries		483,100		535,800
Total	$	1,471,100	$	1,340,200