Note 4 - Loans/Leases Receivable (Details) - Loans By Credit Quality Indicators (USD $)	Dec. 31, 2013	Dec. 31, 2012
Commercial and Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	$ 407,294,743	$ 371,856,380
Commercial and Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	11,355,713	8,008,866
Commercial and Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	13,037,673	14,379,006
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	431,688,129	394,244,252
Owner-Occupied Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	250,028,731	195,567,523
Owner-Occupied Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	8,318,232	5,488,602
Owner-Occupied Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	2,868,949	3,855,183
Owner-Occupied Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	261,215,912	204,911,308
Commercial Construction, Land Development, and Other Land [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	51,868,919	38,125,793
Commercial Construction, Land Development, and Other Land [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	1,588,086	1,238,152
Commercial Construction, Land Development, and Other Land [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	4,387,897	5,598,436
Commercial Construction, Land Development, and Other Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	57,844,902	44,962,381
Non-Owner Occupied Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	326,168,882	312,370,393
Non-Owner Occupied Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	3,310,017	7,319,902
Non-Owner Occupied Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	23,213,216	24,415,255
Non-Owner Occupied Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	352,692,115	344,105,550
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	1,035,361,275	917,920,089
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	24,572,048	22,055,522
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	43,507,735	48,247,880
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Internally assigned risk rating	$ 1,103,441,058	$ 988,223,491