Note 8 - Share Capital (Detail) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Common Stock Owned by Shareholders Percentage	5.00%
Common Stock Additional Shares Percentage	1.00%
Common Stock Shareholder Ownership Level Percentage	5.00%
Common Stock Ownership Penalty Exemption Percentage	5.00%
Number of Rights Authorized (in Shares)	1
Preferred Stock, Par or Stated Value Per Share (in Dollars per share)	$ 0.01	$ 0.01
Share Price (in Dollars per share)	$ 10.00

Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 3, 4, 5, 6, 7, 8

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Price of a single share of a number of saleable stocks of a company.

+ 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 (e)

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

+ Details

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Additional shares that can be purchased without penalty expressed as a percentage.

+ References

No definition available.

+ Details

Name:	whlm_CommonStockAdditionalSharesPercentage
Namespace Prefix:	whlm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of common stock owned by shareholders.

+ References

No definition available.

+ Details

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

- Definition

Percentage of common stock owned that the Company determines that the percentage owned will not have an impact on other criteria.

+ References

No definition available.

+ Details

Name:	whlm_CommonStockOwnershipPenaltyExemptionPercentage
Namespace Prefix:	whlm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Ownership level a share holder must maintain at or above expressed as a percentage of common stock owned.

+ References

No definition available.

+ Details

Name:	whlm_CommonStockShareholderOwnershiopLevelPercentage
Namespace Prefix:	whlm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of Rights Authorized

+ References

No definition available.

+ Details

Name:	whlm_NumberOfRightsAuthorized
Namespace Prefix:	whlm_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration