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Investments in Securities and Fair Value Schedule of Variable Interest Entities (Details) - Other Investments	Dec. 31, 2017 USD ($)
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	$ 10,011,730
Variable Interest Entity, Nonconsolidated, Fair Value, Amount, Assets	10,560,891
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	18,425,000
Variable Interest Entity, Not Primary Beneficiary, Tax Credit LP
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	905,179
Variable Interest Entity, Nonconsolidated, Fair Value, Amount, Assets	905,179
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	1,325,000
Variable Interest Entity, Not Primary Beneficiary, Real Estate LLC or LP
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	5,355,874
Variable Interest Entity, Nonconsolidated, Fair Value, Amount, Assets	5,849,112
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	7,700,000
Variable Interest Entity, Not Primary Beneficiary, Small Business Investment LP
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	3,750,677
Variable Interest Entity, Nonconsolidated, Fair Value, Amount, Assets	3,806,600
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 9,400,000

X

- Definition

Estimated fair value amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.

+ References

No definition available.

+ Details

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- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=77990344&loc=d3e5728-111685

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=77990344&loc=d3e5747-111685

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph a
-URI http://asc.fasb.org/extlink&oid=77990344&loc=d3e5728-111685

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