Note 6 - Investment Securities - Available for Sale (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Available-for-sale Securities [Table Text Block]

	March 31, 201 6				December 31, 201 5
	Cost		Fair Value		Cost		Fair Value
Short-term investments
Certificate of deposit	$	–	$	–	$	4,800,000	$	4,798,810
Bonds- corporate issuances		–		–		6,003,748		6,001,080
Total	$	–	$	–	$	10,803,748	$	10,799,890

	March 31, 201 6				December 31, 201 5
	Cost		Fair Value		Cost		Fair Value
Short-term investment maturities
Within 3 months	$	–	$	–	$	10,803,748	$	10,799,890
Between 3-12 months		–		–		–		–
Total	$	–	$	–	$	10,803,748	$	10,799,890

Investment Income [Table Text Block]

	Three Months Ended March 31,
Description of Securities	2016			2015
Interest and dividends accrued and paid	$	18,987		$	93,175
Accretion of investment premium		(5,788	)		(76,924	)
Realized (losses) gains		(3,858	)		129
Investment income, net	$	9,341		$	16,380

Schedule of Unrealized Loss on Investments [Table Text Block]

	March 31, 201 6				December 31, 201 5
Description of Securities	Fair Value		Unrealized Holding Gains (Losses)		Fair Value		Unrealized Holding Gains (Losses)
Available for Sale (all unrealized holding gains and losses are less than 12 months at date of measurement)
Short-term investments with unrealized gains	$	–	$	–	$	240,024	$	24
Short-term investments with unrealized losses		–		–		10,559,866		(3,882	)
Total	$	–	$	–	$	10,799,890	$	(3,858	)

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Accumulated Other Comprehensive Loss
Balance at January 1, 2016	$	(3,858	)
Realized loss reclassified from other accumulated comprehensive loss		3,858
Other comprehensive gain, net		3,858
Balance at March 31, 2016	$	–