Note 3 - Loans/Leases Receivable (Details) - Impaired Loans/Leases (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Impaired loans/leases with no specific allowance recorded, recorded investment	$ 3,339,899	$ 7,370,591	$ 3,130,879
Impaired loans/leases with no specific allowance recorded, unpaid principal balance	5,143,621	7,569,679	3,434,385
Impaired loans/leases with no specific allowance recorded, average recorded investment	5,612,771	8,129,894
Impaired loans/leases with no specific allowance recorded, interest income recognized	6,441	17,516
Impaired loans/leases with no specific allowance recorded, interest income recognized for cash payments received	6,441	17,516
Impaired loans/leases with specific allowance recorded, recorded investment	11,763,877	10,500,956	15,875,762
Impaired loans/leases with specific allowance recorded, unpaid principal balance	12,226,348	11,808,113	18,008,843
Impaired loans/leases, related allowance	4,072,935	4,365,071	5,244,673
Impaired loans/leases with specific allowance recorded, average recorded investment	11,601,237	10,049,282
Impaired loans/leases with specific allowance recorded, interest income recognized	5,090	774
Impaired loans/leases with specific allowance recorded, interest income recognized for cash payments received	5,090	774
Impaired loans/leases, recorded investment	15,103,776	17,871,547	19,006,641
Impaired loans/leases, unpaid principal balance	17,369,969	19,377,792	21,443,228
Impaired loans/leases, average recorded investment	17,214,008	18,179,176
Impaired loans/leases, interest income recognized	11,531	18,290
Impaired loans/leases, interest income recognized for cash payments received	11,531	18,290
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans/leases with no specific allowance recorded, recorded investment	331,612	441,945	246,308
Impaired loans/leases with no specific allowance recorded, unpaid principal balance	425,636	517,833	342,391
Impaired loans/leases with no specific allowance recorded, average recorded investment	1,352,320	482,151
Impaired loans/leases with no specific allowance recorded, interest income recognized	1,849	1,888
Impaired loans/leases with no specific allowance recorded, interest income recognized for cash payments received	1,849	1,888
Impaired loans/leases with specific allowance recorded, recorded investment	4,969,554	958,813	7,033,401
Impaired loans/leases with specific allowance recorded, unpaid principal balance	4,973,392	1,449,488	8,190,495
Impaired loans/leases, related allowance	2,513,023	732,427	3,300,199
Impaired loans/leases with specific allowance recorded, average recorded investment	4,938,115	910,410
Impaired loans/leases, recorded investment	5,301,166	1,400,758	7,279,709
Impaired loans/leases, unpaid principal balance	5,399,028	1,967,321	8,532,886
Impaired loans/leases, average recorded investment	6,290,435	1,392,561
Impaired loans/leases, interest income recognized	1,849	1,888
Impaired loans/leases, interest income recognized for cash payments received	1,849	1,888
Owner-Occupied Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans/leases with no specific allowance recorded, recorded investment	173,131	389,876	67,415
Impaired loans/leases with no specific allowance recorded, unpaid principal balance	269,354	389,876	163,638
Impaired loans/leases with no specific allowance recorded, average recorded investment	189,621	436,412
Impaired loans/leases with specific allowance recorded, recorded investment	454,980	224,892	620,896
Impaired loans/leases with specific allowance recorded, unpaid principal balance	454,980	224,892	620,896
Impaired loans/leases, related allowance	15,154	117,555	4,462
Impaired loans/leases with specific allowance recorded, average recorded investment	468,590	112,438
Impaired loans/leases, recorded investment	628,111	614,768	688,311
Impaired loans/leases, unpaid principal balance	724,334	614,768	784,534
Impaired loans/leases, average recorded investment	658,211	548,850
Commercial Construction, Land Development, and Other Land [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans/leases with no specific allowance recorded, recorded investment	171,186	2,124,350	31,936
Impaired loans/leases with no specific allowance recorded, unpaid principal balance	511,204	2,247,550	143,136
Impaired loans/leases with no specific allowance recorded, average recorded investment	171,186	2,127,392
Impaired loans/leases with specific allowance recorded, recorded investment	197,225	685,292	337,076
Impaired loans/leases with specific allowance recorded, unpaid principal balance	209,225	796,492	577,894
Impaired loans/leases, related allowance	46,570	477,293	12,087
Impaired loans/leases with specific allowance recorded, average recorded investment	197,526	685,834
Impaired loans/leases, recorded investment	368,411	2,809,642	369,012
Impaired loans/leases, unpaid principal balance	720,429	3,044,042	721,030
Impaired loans/leases, average recorded investment	368,712	2,813,226
Non-Owner Occupied Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans/leases with no specific allowance recorded, recorded investment	290,577	1,983,846	491,717
Impaired loans/leases with no specific allowance recorded, unpaid principal balance	1,528,456	1,983,846	491,717
Impaired loans/leases with no specific allowance recorded, average recorded investment	1,102,174	2,376,752
Impaired loans/leases with no specific allowance recorded, interest income recognized		13,283
Impaired loans/leases with no specific allowance recorded, interest income recognized for cash payments received		13,283
Impaired loans/leases with specific allowance recorded, recorded investment	4,208,602	6,668,048	5,884,343
Impaired loans/leases with specific allowance recorded, unpaid principal balance	4,655,235	7,373,330	6,583,934
Impaired loans/leases, related allowance	767,113	2,117,624	1,153,471
Impaired loans/leases with specific allowance recorded, average recorded investment	4,335,446	6,682,038
Impaired loans/leases, recorded investment	4,499,179	8,651,894	6,376,060
Impaired loans/leases, unpaid principal balance	6,183,691	9,357,176	7,075,651
Impaired loans/leases, average recorded investment	5,437,620	9,058,790
Impaired loans/leases, interest income recognized		13,283
Impaired loans/leases, interest income recognized for cash payments received		13,283
Finance Leases Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans/leases with no specific allowance recorded, recorded investment	665,735	619,800	561,414
Impaired loans/leases with no specific allowance recorded, unpaid principal balance	665,735	619,800	561,414
Impaired loans/leases with no specific allowance recorded, average recorded investment	1,009,487	586,567
Impaired loans/leases with no specific allowance recorded, interest income recognized	4,109
Impaired loans/leases with no specific allowance recorded, interest income recognized for cash payments received	4,109
Impaired loans/leases with specific allowance recorded, recorded investment	457,463	700,842	777,858
Impaired loans/leases with specific allowance recorded, unpaid principal balance	457,463	700,842	777,858
Impaired loans/leases, related allowance	283,485	298,303	356,996
Impaired loans/leases with specific allowance recorded, average recorded investment	380,548	467,524
Impaired loans/leases, recorded investment	1,123,198	1,320,642	1,339,272
Impaired loans/leases, unpaid principal balance	1,123,198	1,320,642	1,339,272
Impaired loans/leases, average recorded investment	1,390,035	1,054,091
Impaired loans/leases, interest income recognized	4,109
Impaired loans/leases, interest income recognized for cash payments received	4,109
Residential Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans/leases with no specific allowance recorded, recorded investment	981,608	977,436	1,060,770
Impaired loans/leases with no specific allowance recorded, unpaid principal balance	1,017,186	977,436	1,060,770
Impaired loans/leases with no specific allowance recorded, average recorded investment	1,089,298	1,222,955
Impaired loans/leases with no specific allowance recorded, interest income recognized	483	1,455
Impaired loans/leases with no specific allowance recorded, interest income recognized for cash payments received	483	1,455
Impaired loans/leases with specific allowance recorded, recorded investment	864,957	866,172	727,959
Impaired loans/leases with specific allowance recorded, unpaid principal balance	864,957	866,172	763,537
Impaired loans/leases, related allowance	180,160	224,972	151,663
Impaired loans/leases with specific allowance recorded, average recorded investment	728,349	793,141
Impaired loans/leases with specific allowance recorded, interest income recognized	2,830	774
Impaired loans/leases with specific allowance recorded, interest income recognized for cash payments received	2,830	774
Impaired loans/leases, recorded investment	1,846,565	1,843,608	1,788,729
Impaired loans/leases, unpaid principal balance	1,882,143	1,843,608	1,824,307
Impaired loans/leases, average recorded investment	1,817,647	2,016,096
Impaired loans/leases, interest income recognized	3,313	2,229
Impaired loans/leases, interest income recognized for cash payments received	3,313	2,229
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans/leases with no specific allowance recorded, recorded investment	726,050	833,338	671,319
Impaired loans/leases with no specific allowance recorded, unpaid principal balance	726,050	833,338	671,319
Impaired loans/leases with no specific allowance recorded, average recorded investment	698,685	897,665
Impaired loans/leases with no specific allowance recorded, interest income recognized		890
Impaired loans/leases with no specific allowance recorded, interest income recognized for cash payments received		890
Impaired loans/leases with specific allowance recorded, recorded investment	611,096	396,897	494,229
Impaired loans/leases with specific allowance recorded, unpaid principal balance	611,096	396,897	494,229
Impaired loans/leases, related allowance	267,430	396,897	265,795
Impaired loans/leases with specific allowance recorded, average recorded investment	552,663	397,897
Impaired loans/leases with specific allowance recorded, interest income recognized	2,260
Impaired loans/leases with specific allowance recorded, interest income recognized for cash payments received	2,260
Impaired loans/leases, recorded investment	1,337,146	1,230,235	1,165,548
Impaired loans/leases, unpaid principal balance	1,337,146	1,230,235	1,165,548
Impaired loans/leases, average recorded investment	1,251,348	1,295,562
Impaired loans/leases, interest income recognized	2,260	890
Impaired loans/leases, interest income recognized for cash payments received	$ 2,260	$ 890

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

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