Fair Value - Level 3 Quantitative Information (Details) (USD $)	6 Months Ended	12 Months Ended
Jun. 30, 2013	Dec. 31, 2012
Recurring \| Interest Rate Swap Agreements \| Derivative Financial Instruments, Assets \| Weighted Average
Fair Value Inputs
Discount rate	0.99%	1.00%
Recurring \| Interest Rate Lock Commitments \| Derivative Financial Instruments, Liabilities
Fair Value Inputs
Pull through rates	85.00%
Recurring \| Interest Rate Lock Commitments \| Derivative Financial Instruments, Liabilities \| Minimum
Fair Value Inputs
Pull through rates	84.00%
Recurring \| Interest Rate Lock Commitments \| Derivative Financial Instruments, Liabilities \| Maximum
Fair Value Inputs
Pull through rates	85.00%
Recurring \| Interest Rate Lock Commitments \| Derivative Financial Instruments, Liabilities \| Weighted Average
Fair Value Inputs
Pull through rates		83.90%
Recurring \| Mortgage Servicing Rights \| Derivative Financial Instruments, Assets
Fair Value Inputs
Discount rate	8.00%	8.00%
Constant prepayment rate	11.92%	17.96%
Cost of service	$ 50	$ 50
Nonrecurring \| Impaired Loans Receivable \| Minimum
Fair Value Inputs
Collateral discounts	15.00%	10.00%
Nonrecurring \| Impaired Loans Receivable \| Maximum
Fair Value Inputs
Collateral discounts	50.00%	15.00%
Nonrecurring \| Other Real Estate Owned \| Minimum
Fair Value Inputs
Collateral discounts	6.00%
Nonrecurring \| Other Real Estate Owned \| Maximum
Fair Value Inputs
Collateral discounts	15.00%
Nonrecurring \| Other Real Estate Owned \| Weighted Average
Fair Value Inputs
Collateral discounts		15.00%
Level 3 \| Recurring \| Interest Rate Swap Agreements
Quantitative Information
Assets, Fair Value Disclosure	154,000	196,000
Level 3 \| Recurring \| Interest Rate Lock Commitments
Quantitative Information
Liabilities, Fair Value Disclosure	(312,000)	873,000
Level 3 \| Recurring \| Mortgage Servicing Rights
Quantitative Information
Assets, Fair Value Disclosure	3,825,000	2,525,000
Level 3 \| Nonrecurring \| Impaired Loans Receivable
Quantitative Information
Assets, Fair Value Disclosure	8,584,000	7,276,000
Level 3 \| Nonrecurring \| Other Real Estate Owned
Quantitative Information
Assets, Fair Value Disclosure	$ 207,000	$ 5,281,000

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

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

- Details

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

- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

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

- Definition

Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

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

- Definition

This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

+ Details

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

- Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Fair Value Inputs, Collateral Discounts

+ References

No definition available.

+ Details

Name:	ydkn_FairValueInputsCollateralDiscounts
Namespace Prefix:	ydkn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair Value Inputs, Cost of Service

+ References

No definition available.

+ Details

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Namespace Prefix:	ydkn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Fair Value Inputs, Pull Through Rates

+ References

No definition available.

+ Details

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Namespace Prefix:	ydkn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration