Note 4 - Loans Leases Receivable - Concentration by Industries (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Gross loans/leases receivable	$ 2,405,486,985	$ 1,798,022,675
Lessors of Non-residential Buildings [Member]
Gross loans/leases receivable	$ 359,040,649	$ 311,138,005
Percentage of total loans/leases	15.00%	17.00%
Lessors of Residential Buildings [Member]
Gross loans/leases receivable	$ 166,036,201	$ 91,811,101
Percentage of total loans/leases	7.00%	5.00%
Nonresidential Property Managers [Member]
Gross loans/leases receivable	$ 76,504,076	$ 10,500,305
Percentage of total loans/leases	3.00%	1.00%
Bank Holding Companies [Member]
Gross loans/leases receivable	$ 66,069,612	$ 55,840,984
Percentage of total loans/leases	3.00%	3.00%