Debt Instrument, Number of Instruments

No definition available.

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- Definition

The percent of ownership interest the Company's Chairman is required to have to be in compliance with the debt covenants listed in amendments to the Credit agreement.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility, Covenant Terms, Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Covenant Terms, Fixed Charge Coverage Ratio, Denominator, Percentage of Credit Facility

+ References

No definition available.

+ Details

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Namespace Prefix:	cnfr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility, Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04.(a))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04.(a))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Balance Type:
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- Details

Name:	us-gaap_DebtInstrumentAxis=cnfr_AmendedCreditAgreementMember
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Balance Type:
Period Type:

- Details

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- Details

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- Details

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Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cnfr_TermNote2014Member
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Period Type:

- Details

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- Details

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Senior Debt (Details Textual)	1 Months Ended	3 Months Ended	12 Months Ended
Senior Debt (Details Textual)	Sep. 30, 2014	Dec. 31, 2015 USD ($) debt_instrument	Dec. 31, 2015 USD ($) debt_instrument	Jan. 26, 2016	Dec. 31, 2014	Sep. 29, 2014
Revolving Credit Facility [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
Covenant terms, denominator, percentage of facility amount		20.00%	20.00%
Drawn down from credit facility		$ 3,500,000
Remaining borrowing capacity		$ 14,000,000	$ 14,000,000
Minimum [Member] \| Revolving Credit Facility [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
Covenant terms, ownership percentage		15.00%	15.00%			50.00%
Amended Credit Agreement [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
Maturities in 2016		$ 5,500,000	$ 5,500,000
Maturities in 2017		2,500,000	2,500,000
Maturities in 2018		2,800,000	2,800,000
Maturities in 2019		2,000,000	2,000,000
Maturities in 2020		$ 0	$ 0
Subsequent Event [Member] \| Revolving Credit Facility [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
Covenant terms, denominator, percentage of facility amount				16.67%
Secured Debt [Member]
Debt Instrument [Line Items]
Number of debt instruments \| debt_instrument		3	3
Weighted average interest rate		3.40%	3.40%		3.30%
Secured Debt [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Borrowing capacity		$ 17,500,000.0	$ 17,500,000.0
Unused borrowing commitment fee percentage			0.20%
Long-term Debt, Fiscal Year Maturity [Abstract]
Covenant terms, fixed charge coverage ratio			1.20
Fixed charge coverage ratio			0.9
Secured Debt [Member] \| Term Note [Member]
Debt Instrument [Line Items]
Face amount of debt		5,000,000.0	$ 5,000,000.0
Term of debt instrument	5 years		5 years
Secured Debt [Member] \| 2014 Term Note [Member]
Debt Instrument [Line Items]
Face amount of debt		$ 7,500,000.0	$ 7,500,000.0
Term of debt instrument			5 years
Secured Debt [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			2.75%
Secured Debt [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Term Note [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			2.75%
Secured Debt [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| 2014 Term Note [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			3.25%
Secured Debt [Member] \| Prime Rate [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			1.00%
Secured Debt [Member] \| Prime Rate [Member] \| Term Note [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			1.00%
Secured Debt [Member] \| Prime Rate [Member] \| 2014 Term Note [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			1.50%