Note 3 - Loans Leases Receivable - Loans Leases Nonperforming Loans Leases (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Accruing Past Due 90 Days or More	$ 19,573	$ 88,671
Nonaccrual Loans/Leases	12,553,800	11,441,234
Accruing TDRs	3,168,014	9,394,967
Loans and Leases Receivable, Net of Deferred Income	$ 3,105,901,458	$ 2,956,713,493
Percentage of Total NPLs	100.00%	100.00%
Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More	$ 19,573	$ 88,671
Nonaccrual Loans/Leases	12,553,800	11,441,234
Accruing TDRs	1,327,008	7,112,472
Loans and Leases Receivable, Net of Deferred Income	$ 13,900,381	$ 18,642,377
Percentage of Total NPLs	100.00%	100.00%
Commercial Portfolio Segment [Member]
Nonaccrual Loans/Leases	$ 1,485,295	$ 1,231,353
Loans and Leases Receivable, Net of Deferred Income	1,273,000,094	1,134,516,315
Commercial Portfolio Segment [Member] \| Nonperforming Financial Instruments [Member]
Nonaccrual Loans/Leases	1,485,295	1,231,353
Accruing TDRs	800,176	5,224,182
Loans and Leases Receivable, Net of Deferred Income	$ 2,285,471	$ 6,455,535
Percentage of Total NPLs	16.44%	34.63%
Commercial Real Estate Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	$ 1,349,318,914	$ 1,303,491,882
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Commercial Real Estate Loans [Member]
Nonaccrual Loans/Leases	421,838	333,900
Loans and Leases Receivable, Net of Deferred Income	349,007,830	332,742,477
Commercial Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Nonaccrual Loans/Leases	1,886,521	4,844,312
Loans and Leases Receivable, Net of Deferred Income	162,644,566	186,402,404
Commercial Real Estate Portfolio Segment [Member] \| Other Non-owner Occupied Commercial Real Estate Loans [Member]
Nonaccrual Loans/Leases	4,713,601	1,243,728
Loans and Leases Receivable, Net of Deferred Income	837,666,518	784,347,000
Commercial Real Estate Portfolio Segment [Member] \| Nonperforming Financial Instruments [Member] \| Owner Occupied Commercial Real Estate Loans [Member]
Nonaccrual Loans/Leases	421,838	333,900
Accruing TDRs	106,874	107,322
Loans and Leases Receivable, Net of Deferred Income	$ 528,712	$ 441,222
Percentage of Total NPLs	3.80%	2.37%
Commercial Real Estate Portfolio Segment [Member] \| Nonperforming Financial Instruments [Member] \| Construction Loans [Member]
Nonaccrual Loans/Leases	$ 1,886,521	$ 4,844,312
Loans and Leases Receivable, Net of Deferred Income	$ 1,886,521	$ 4,844,312
Percentage of Total NPLs	13.57%	25.99%
Commercial Real Estate Portfolio Segment [Member] \| Nonperforming Financial Instruments [Member] \| Other Non-owner Occupied Commercial Real Estate Loans [Member]
Nonaccrual Loans/Leases	$ 4,713,601	$ 1,243,728
Loans and Leases Receivable, Net of Deferred Income	$ 4,713,601	$ 1,243,728
Percentage of Total NPLs	33.92%	6.67%
Finance Leases Portfolio Segment [Member]
Nonaccrual Loans/Leases	$ 2,529,004	$ 2,175,044
Loans and Leases Receivable, Net of Deferred Income	133,196,613	141,448,232
Finance Leases Portfolio Segment [Member] \| Nonperforming Financial Instruments [Member]
Nonaccrual Loans/Leases	2,529,004	2,175,044
Accruing TDRs	137,432	1,494,448
Loans and Leases Receivable, Net of Deferred Income	$ 2,666,436	$ 3,669,492
Percentage of Total NPLs	19.18%	19.68%
Residential Portfolio Segment [Member]
Accruing Past Due 90 Days or More		$ 74,519
Nonaccrual Loans/Leases	$ 1,315,151	1,363,806
Loans and Leases Receivable, Net of Deferred Income	257,433,713	258,646,265
Residential Portfolio Segment [Member] \| Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More		74,519
Nonaccrual Loans/Leases	1,315,151	1,363,806
Accruing TDRs	270,903	272,493
Loans and Leases Receivable, Net of Deferred Income	$ 1,586,054	$ 1,710,818
Percentage of Total NPLs	11.41%	9.18%
Consumer Portfolio Segment [Member]
Accruing Past Due 90 Days or More	$ 19,573	$ 14,152
Nonaccrual Loans/Leases	202,390	249,091
Loans and Leases Receivable, Net of Deferred Income	92,952,124	118,610,799
Consumer Portfolio Segment [Member] \| Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More	19,573	14,152
Nonaccrual Loans/Leases	202,390	249,091
Accruing TDRs	11,623	14,027
Loans and Leases Receivable, Net of Deferred Income	$ 233,586	$ 277,270
Percentage of Total NPLs	1.68%	1.49%

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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