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Significant Components of Current and Long-Term Deferred Tax Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Components Of Deferred Income Tax Assets And Liabilities [Line Items]    
Capitalized inventory costs and inventory reserves $ 2,883 $ 2,386
Self-insurance reserves 1,093 1,039
Allowance for doubtful accounts 882 1,084
Other current deferred tax assets 1,539 1,215
Total current deferred tax assets 6,397 [1] 5,724 [1]
Share-based compensation 17,455 13,911
Other long-term deferred tax assets 909 797
Net operating loss carryforwards 283 609
Total long-term deferred tax assets 18,647 15,317
Valuation allowance (75) (391)
Total long-term deferred tax assets 18,572 [2] 14,926 [2]
Other current deferred tax liabilities (1,304) (36)
Total current deferred tax liabilities (1,304) [1] (36) [1]
Deductible goodwill (76,519) (66,636)
Depreciation (2,873) (3,100)
Other long-term deferred tax liabilities (2,556) (1,322)
Total long-term deferred tax liabilities (81,948) [2] (71,058) [2]
Net deferred tax liabilities $ (58,283) $ (50,444)
[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.