LOAN SERVICING - Characteristics and Sensitivity of the Fair Value of MSRs (Details) - Mortgage Loan Servicing - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Servicing Liabilities at Fair Value [Line Items]
Composition of mortgage loans serviced for others	100.00%	100.00%
Weighted average life (years)	7 years 3 months 18 days	6 years 7 months 6 days
Prepayment speed	8.50%	9.98%
Discount rate	10.27%	9.66%
Effect on fair value due to change in interest rates:
0.25%	$ 185	$ 421
0.50%	312	660
- 0.25%	(266)	(599)
- 0.50%	$ (614)	$ (1,104)
Fixed rate loans
Servicing Liabilities at Fair Value [Line Items]
Composition of mortgage loans serviced for others	99.94%	99.90%
Adjustable rate loans
Servicing Liabilities at Fair Value [Line Items]
Composition of mortgage loans serviced for others	0.06%	0.10%

No definition available.

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

- Definition

Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=56950315&loc=d3e122596-111746

+ Details

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

- Definition

Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

+ References

+ Details

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

- Definition

Weighted average life of financial assets and financial liabilities, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageLife1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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

- Definition

Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 0.25 Percent Adverse Change in Discount Rate

+ References

No definition available.

+ Details

Name:	ydkn_SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof0.25PercentAdverseChangeinDiscountRate
Namespace Prefix:	ydkn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 0.25 Percent Positive Change in Discount Rate

+ References

No definition available.

+ Details

Name:	ydkn_SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof0.25PercentPositiveChangeinDiscountRate
Namespace Prefix:	ydkn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 0.50 Percent Adverse Change in Discount Rate

+ References

No definition available.

+ Details

Name:	ydkn_SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof0.50PercentAdverseChangeinDiscountRate
Namespace Prefix:	ydkn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 0.50 Percent Positive Change in Discount Rate

+ References

No definition available.

+ Details

Name:	ydkn_SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof0.50PercentPositiveChangeinDiscountRate
Namespace Prefix:	ydkn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Servicing Assets and Servicing Liabilities, Percentage of Total

+ References

No definition available.

+ Details

Name:	ydkn_ServicingAssetsandServicingLiabilitiesPercentageofTotal
Namespace Prefix:	ydkn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_FinancialInstrumentAxis=ydkn_MortgageLoanServicingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ParticipatingMortgageLoansAxis=us-gaap_FixedRateResidentialMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ParticipatingMortgageLoansAxis=us-gaap_AdjustableRateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: