Note 3 - Loans Leases Receivable - Impaired Loans Leases (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Dec. 31, 2015
Commercial Portfolio Segment [Member]
Recorded investment with no specific allowance recorded	$ 1,846,140		$ 1,846,140	$ 234,636
Unpaid principal balance with no specific allowance recorded	1,987,082		1,987,082	346,072
Average recorded investment with no specific allowance recorded	1,677,527	$ 365,798	3,864,852
Interest income recognized with no specific allowance recorded	3,301	1,870	8,644
Interest income recognized for cash payments received with no specific allowance recorded	3,301	1,870	8,644
Recorded investment with specific allowance recorded	4,027,953		4,027,953	5,051,846
Unpaid principal balance with specific allowance recorded	4,031,792		4,031,792	5,055,685
Related allowance	1,114,680		1,114,680	2,592,270
Average recorded investment with specific allowance recorded	4,188,621	4,735,149	2,195,524
Interest income recognized with specific allowance recorded
Interest income recognized for cash payments received with specific allowance recorded
Recorded investment	5,874,093		5,874,093	5,286,482
Unpaid principal balance	6,018,874		6,018,874	5,401,757
Average recorded investment	5,866,148	5,100,947	6,060,376
Interest income recognized	3,301	1,870	8,644
Interest income recognized for cash payments received	3,301	1,870	8,644
Interest income recognized with no specific allowance recorded	3,301	1,870	8,644
Interest income recognized for cash payments received with no specific allowance recorded	3,301	1,870	8,644
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Recorded investment with no specific allowance recorded	767,032		767,032	256,761
Unpaid principal balance with no specific allowance recorded	860,806		860,806	350,535
Average recorded investment with no specific allowance recorded	767,032	451,851	621,553
Interest income recognized with no specific allowance recorded
Interest income recognized for cash payments received with no specific allowance recorded
Recorded investment with specific allowance recorded	322,148		322,148
Unpaid principal balance with specific allowance recorded	322,148		322,148
Related allowance	57,398		57,398
Average recorded investment with specific allowance recorded	363,911		401,050
Interest income recognized with specific allowance recorded
Interest income recognized for cash payments received with specific allowance recorded
Recorded investment	1,089,180		1,089,180	256,761
Unpaid principal balance	1,182,954		1,182,954	350,535
Average recorded investment	1,130,943	451,851	1,022,603
Interest income recognized
Interest income recognized for cash payments received
Interest income recognized with no specific allowance recorded
Interest income recognized for cash payments received with no specific allowance recorded
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Recorded investment with no specific allowance recorded
Unpaid principal balance with no specific allowance recorded				228,818
Average recorded investment with no specific allowance recorded		9,968
Interest income recognized with no specific allowance recorded
Interest income recognized for cash payments received with no specific allowance recorded
Recorded investment with specific allowance recorded	186,681		186,681	193,804
Unpaid principal balance with specific allowance recorded	186,681		186,681	205,804
Related allowance	77,611		77,611	76,934
Average recorded investment with specific allowance recorded	187,831	335,707	190,208
Interest income recognized with specific allowance recorded
Interest income recognized for cash payments received with specific allowance recorded
Recorded investment	186,681		186,681	193,804
Unpaid principal balance	186,681		186,681	434,622
Average recorded investment	187,831	345,675	190,208
Interest income recognized
Interest income recognized for cash payments received
Interest income recognized with no specific allowance recorded
Interest income recognized for cash payments received with no specific allowance recorded
Commercial Real Estate Portfolio Segment [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Recorded investment with no specific allowance recorded	2,042,391		2,042,391	1,578,470
Unpaid principal balance with no specific allowance recorded	2,042,391		2,042,391	1,578,470
Average recorded investment with no specific allowance recorded	1,969,034	2,868,950	1,789,571
Interest income recognized with no specific allowance recorded
Interest income recognized for cash payments received with no specific allowance recorded
Recorded investment with specific allowance recorded	177,134		177,134
Unpaid principal balance with specific allowance recorded	177,134		177,134
Related allowance	40,734		40,734
Average recorded investment with specific allowance recorded	135,141		67,571
Interest income recognized with specific allowance recorded
Interest income recognized for cash payments received with specific allowance recorded
Recorded investment	2,219,525		2,219,525	1,578,470
Unpaid principal balance	2,219,525		2,219,525	1,578,470
Average recorded investment	2,104,175	2,868,950	1,857,142
Interest income recognized
Interest income recognized for cash payments received
Interest income recognized with no specific allowance recorded
Interest income recognized for cash payments received with no specific allowance recorded
Finance Leases Portfolio Segment [Member]
Recorded investment with no specific allowance recorded	1,860,773		1,860,773	871,884
Unpaid principal balance with no specific allowance recorded	1,860,773		1,860,773	871,884
Average recorded investment with no specific allowance recorded	2,008,095	634,378	1,755,969
Interest income recognized with no specific allowance recorded	21,095	325	52,595
Interest income recognized for cash payments received with no specific allowance recorded	21,095	325	52,595
Recorded investment with specific allowance recorded	1,064,432		1,064,432	829,457
Unpaid principal balance with specific allowance recorded	1,064,432		1,064,432	829,457
Related allowance	739,207		739,207	306,193
Average recorded investment with specific allowance recorded	793,769	488,860	653,884
Interest income recognized with specific allowance recorded
Interest income recognized for cash payments received with specific allowance recorded
Recorded investment	2,925,205		2,925,205	1,701,341
Unpaid principal balance	2,925,205		2,925,205	1,701,341
Average recorded investment	2,801,864	1,123,238	2,409,853
Interest income recognized	21,095	325	52,595
Interest income recognized for cash payments received	21,095	325	52,595
Interest income recognized with no specific allowance recorded	21,095	325	52,595
Interest income recognized for cash payments received with no specific allowance recorded	21,095	325	52,595
Residential Portfolio Segment [Member]
Recorded investment with no specific allowance recorded	1,418,957		1,418,957	613,486
Unpaid principal balance with no specific allowance recorded	1,458,158		1,458,158	649,064
Average recorded investment with no specific allowance recorded	1,481,340	900,938	1,455,159
Interest income recognized with no specific allowance recorded	941	1,362	2,992
Interest income recognized for cash payments received with no specific allowance recorded	941	1,362	2,992
Recorded investment with specific allowance recorded	811,872		811,872	805,301
Unpaid principal balance with specific allowance recorded	886,004		886,004	805,301
Related allowance	169,147		169,147	185,801
Average recorded investment with specific allowance recorded	807,827	984,558	799,427
Interest income recognized with specific allowance recorded	1,503	1,981	5,409
Interest income recognized for cash payments received with specific allowance recorded	1,503	1,981	5,409
Recorded investment	2,230,829		2,230,829	1,418,787
Unpaid principal balance	2,344,162		2,344,162	1,454,365
Average recorded investment	2,289,167	1,885,496	2,254,586
Interest income recognized	2,444	3,343	8,401
Interest income recognized for cash payments received	2,444	3,343	8,401
Interest income recognized with no specific allowance recorded	941	1,362	2,992
Interest income recognized for cash payments received with no specific allowance recorded	941	1,362	2,992
Consumer Portfolio Segment [Member]
Recorded investment with no specific allowance recorded	208,916		208,916	377,304
Unpaid principal balance with no specific allowance recorded	208,916		208,916	377,304
Average recorded investment with no specific allowance recorded	322,738	328,669	430,322
Interest income recognized with no specific allowance recorded		3,912
Interest income recognized for cash payments received with no specific allowance recorded		3,912
Recorded investment with specific allowance recorded	160,008		160,008	210,438
Unpaid principal balance with specific allowance recorded	160,008		160,008	210,438
Related allowance	148,320		148,320	143,089
Average recorded investment with specific allowance recorded	160,301	723,674	145,962
Interest income recognized with specific allowance recorded	1,458	1,391	4,426
Interest income recognized for cash payments received with specific allowance recorded	1,458	1,391	4,426
Recorded investment	368,924		368,924	587,742
Unpaid principal balance	368,924		368,924	587,742
Average recorded investment	483,039	1,052,343	576,284
Interest income recognized	1,458	5,303	4,426
Interest income recognized for cash payments received	1,458	5,303	4,426
Interest income recognized with no specific allowance recorded		3,912
Interest income recognized for cash payments received with no specific allowance recorded		3,912
Recorded investment with no specific allowance recorded	8,144,209		8,144,209	3,932,541
Unpaid principal balance with no specific allowance recorded	8,418,126		8,418,126	4,402,147
Average recorded investment with no specific allowance recorded	8,225,766	5,560,552	9,917,426
Interest income recognized with no specific allowance recorded	25,337	7,469	64,231
Interest income recognized for cash payments received with no specific allowance recorded	25,337	7,469	64,231
Recorded investment with specific allowance recorded	6,750,228		6,750,228	7,090,846
Unpaid principal balance with specific allowance recorded	6,828,199		6,828,199	7,106,685
Related allowance	2,347,097		2,347,097	3,304,287
Average recorded investment with specific allowance recorded	6,637,401	7,267,948	4,453,626
Interest income recognized with specific allowance recorded	2,961	3,372	9,835
Interest income recognized for cash payments received with specific allowance recorded	2,961	3,372	9,835
Recorded investment	14,894,437		14,894,437	11,023,387
Unpaid principal balance	15,246,325		15,246,325	$ 11,508,832
Average recorded investment	14,863,167	12,828,500	14,371,052
Interest income recognized	28,298	10,841	74,066
Interest income recognized for cash payments received	28,298	10,841	74,066
Interest income recognized with no specific allowance recorded	25,337	7,469	64,231
Interest income recognized for cash payments received with no specific allowance recorded	$ 25,337	$ 7,469	$ 64,231