Lines of Credit and Long-Term Debt Lines of Credit and Long-Term Debt (Details) (USD $)	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 120,000,000
Line of Credit Facility Increase in Additional Borrowings	25,000,000
Debt, Weighted Average Interest Rate	3.80%us-gaap_DebtWeightedAverageInterestRate	3.80%us-gaap_DebtWeightedAverageInterestRate	4.70%us-gaap_DebtWeightedAverageInterestRate
debt instrument, minimum credit availabilty requirement amount	7,000,000
debt instrument, minimum credit availability requirement percentage	10.00%
Line of Credit Facility, Current Borrowing Capacity	101,100,000	98,800,000
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	600,000	800,000
Letters of Credit Outstanding, Amount	4,200,000	4,600,000
Short-term Debt, Maximum Amount Outstanding During Period	$ 271,000	$ 200,000
Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate, for Prime Rate	0.50%
Debt Instrument, Basis Spread on Variable Rate, for LIBOR	1.50%
Maximum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate, for Prime Rate	1.00%
Debt Instrument, Basis Spread on Variable Rate, for LIBOR	2.00%

Weighted average interest rate of debt outstanding.

No definition available.

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

- Details

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

- 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

+ Details

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

- Definition

For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, the maximum amount borrowed at any time during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_ShorttermDebtMaximumAmountOutstandingDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for 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 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533

+ Details

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

- Definition

Percentage points added to the reference rate, LIBOR, to compute the variable rate on the debt instrumentDebt Instrument.

+ References

No definition available.

+ Details

Name:	wmar_DebtInstrumentBasisSpreadOnVariableRateForLibor
Namespace Prefix:	wmar_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	wmar_DebtInstrumentBasisSpreadOnVariableRateForPrimeRate
Namespace Prefix:	wmar_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

debt instrument, minimum credit availability requirement percentage of borrowing base.

+ References

No definition available.

+ Details

Name:	wmar_DebtInstrumentMinimumCreditAvailabilityRequirementPercentage
Namespace Prefix:	wmar_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

debt instrument, minimum credit availabilty requirement amount of borrowing base.

+ References

No definition available.

+ Details

Name:	wmar_DebtInstrumentMinimumCreditAvailabiltyRequirementAmount
Namespace Prefix:	wmar_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Increase for additional borrowings on the line of credit facility during the period.

+ References

No definition available.

+ Details

Name:	wmar_LineofCreditFacilityIncreaseinAdditionalBorrowings
Namespace Prefix:	wmar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: