Note 4 - Prepaid Expenses and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2012

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

	2012		2011
Prepaid expenses	$	529,312	$	452,015
Interest receivable		35,742		18,511
Other receivables		16,025		7,723
Security deposits, current portion		-		44,839
Deferred tax assets, current portion		-		28,170
	$	581,079	$	551,258