Note 3 -Short Term Investments Available For Sale (Details) - Short-term Investment by Bond Maturities (USD $)	Dec. 31, 2013	Dec. 31, 2012
Within 3 Months [Member]
Short-term investments
Cost	$ 7,799,032	$ 3,053,740
Fair value	7,797,689	3,002,350
Between 3-12 Months [Member]
Short-term investments
Cost	29,401,543	5,110,487
Fair value	29,358,692	5,035,270
Corporate Debt Securities [Member]
Short-term investments
Cost	37,200,576	8,164,227
Fair value	37,156,381	8,037,620
Summary of Short Term Investment [Member]
Short-term investments
Cost	37,200,576	8,164,227
Fair value	$ 37,156,381	$ 8,037,620