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v2.4.1.9

Significant Components of Current and Long-Term Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Components Of Deferred Income Tax Assets And Liabilities [Line Items] |  |  |  |
Capitalized inventory costs and inventory reserves | $ 3,262 us-gaap_DeferredTaxAssetsInventory |  | $ 2,883 us-gaap_DeferredTaxAssetsInventory |
Self-insurance reserves | 759 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance |  | 1,093 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance |
Allowance for doubtful accounts | 992 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts |  | 882 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts |
Other current deferred tax assets | 1,588 us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther |  | 1,539 us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther |
Total current deferred tax assets | 6,601 us-gaap_DeferredTaxAssetsGrossCurrent | [1] | 6,397 us-gaap_DeferredTaxAssetsGrossCurrent | [1]
Share-based compensation | 20,108 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost |  | 17,455 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost |
Other long-term deferred tax assets | 746 us-gaap_DeferredTaxAssetsOther |  | 909 us-gaap_DeferredTaxAssetsOther |
Net operating loss carryforwards | 221 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |  | 283 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |
Total long-term deferred tax assets | 21,075 us-gaap_DeferredTaxAssetsGrossNoncurrent |  | 18,647 us-gaap_DeferredTaxAssetsGrossNoncurrent |
Valuation allowance |  |  | (75)us-gaap_DeferredTaxAssetsValuationAllowanceNoncurrent |
Total long-term deferred tax assets | 21,075 us-gaap_DeferredTaxAssetsNetNoncurrent | [2] | 18,572 us-gaap_DeferredTaxAssetsNetNoncurrent | [2]
Other current deferred tax liabilities | (536)wso_DeferredTaxLiabilitiesOtherCurrent |  | (1,304)wso_DeferredTaxLiabilitiesOtherCurrent |
Total current deferred tax liabilities | (536)us-gaap_DeferredTaxLiabilitiesCurrent | [1] | (1,304)us-gaap_DeferredTaxLiabilitiesCurrent | [1]
Deductible goodwill | (80,404)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill |  | (76,519)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill |
Depreciation | (2,992)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment |  | (2,873)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment |
Other long-term deferred tax liabilities | (1,320)us-gaap_DeferredTaxLiabilitiesOther |  | (2,556)us-gaap_DeferredTaxLiabilitiesOther |
Total long-term deferred tax liabilities | (84,716)us-gaap_DeferredTaxLiabilities | [2] | (81,948)us-gaap_DeferredTaxLiabilities | [2]
Net deferred tax liabilities | $ (57,576)us-gaap_DeferredTaxAssetsLiabilitiesNet |  | $ (58,283)us-gaap_DeferredTaxAssetsLiabilitiesNet |
[1] | Current deferred tax assets and liabilities have been included in the consolidated balance sheets in other current assets.
[2] | Long-term deferred tax assets and liabilities have been included in the consolidated balance sheets in deferred income taxes and other liabilities.

X
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- Definition Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31928-109318 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31958-109318 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other provisions, reserves, allowances, and accruals not separately disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Asset -URI http://asc.fasb.org/extlink&oid=6510090 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated losses under self insurance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314 + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized expected to be realized or consumed after one year (or the normal operating cycle, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31928-109318 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318 + Details
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