Note 3 - Loans/Leases Receivable (Detail) - Delinquency Status (USD $)	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable	$ 1,194,579,266	$ 1,181,956,235
Performing [Member] | Leases receivable [Member]
Financing Receivable	97,880,074	91,905,699
Performing [Member] | Residential Real Estate [Member]
Financing Receivable	106,259,361	96,973,576
Performing [Member] | Installment and Other Consumer [Member]
Financing Receivable	76,332,919	77,126,064
Performing [Member] | Total [Member]
Financing Receivable	280,472,354	266,005,339
Nonperforming [Member] | Leases receivable [Member]
Financing Receivable	687,508	1,306,663
Nonperforming [Member] | Residential Real Estate [Member]
Financing Receivable	1,191,136	1,133,475
Nonperforming [Member] | Installment and Other Consumer [Member]
Financing Receivable	1,083,894	1,097,016
Nonperforming [Member] | Total [Member]
Financing Receivable	2,962,538	3,537,154
Delinquent [Member] | Leases receivable [Member]
Financing Receivable	98,567,582	93,212,362
Delinquent [Member] | Residential Real Estate [Member]
Financing Receivable	107,450,497	98,107,051
Delinquent [Member] | Installment and Other Consumer [Member]
Financing Receivable	77,416,813	78,223,080
Delinquent [Member] | Total [Member]
Financing Receivable	283,434,892	269,542,493
Leases receivable [Member]
Financing Receivable	$ 100,476,413	$ 95,089,877