Note 4 - Prepaid Expenses and Other Current Assets (Detail) - Prepaid Expenses and Other Current Assets (USD $)	Dec. 31, 2012	Dec. 31, 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