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Note 4 - Loans Leases Receivable - Concentration by Industries (Details) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016
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Gross loans/leases receivable | $ 2,964,485,400 | $ 2,405,486,985
Lessors of Non-residential Buildings [Member] |  |
Gross loans/leases receivable | $ 400,622,681 | $ 359,040,649
Percentage of total loans/leases | 14.00% | 15.00%
Lessors of Residential Buildings [Member] |  |
Gross loans/leases receivable | $ 370,353,561 | $ 166,036,201
Percentage of total loans/leases | 12.00% | 7.00%
Administration of Urban Planning and Community and Rural Development [Member] |  |
Gross loans/leases receivable | $ 83,343,541 | $ 37,097,000
Percentage of total loans/leases | 3.00% | 2.00%
Bank Holding Companies [Member] |  |
Gross loans/leases receivable | $ 66,950,294 | $ 66,069,612
Percentage of total loans/leases | 2.00% | 3.00%
Nonresidential Property Managers [Member] |  |
Gross loans/leases receivable | $ 51,984,722 | $ 76,504,076
Percentage of total loans/leases | 2.00% | 3.00%

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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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