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Income Taxes - Deferred Income Taxes - Valuation Allowance - Narrative (Detail) - USD ($)
12 Months Ended
Apr. 30, 2017
May 01, 2016
May 03, 2015
Income Taxes [Line Items]      
Valuation allowance $ 536,000 $ 590,000  
Poland [Member] | Culp Europe [Member]      
Income Taxes [Line Items]      
Income tax expense (benefit) related to changes in the valuation allowance for deferred tax assets   (289,000) $ 50,000
Poland [Member] | Valuation Allowance, Operating Loss Carryforwards [Member] | Culp Europe [Member]      
Income Taxes [Line Items]      
Valuation allowance 72,000 72,000  
U.S. Tax Authorities and Poland Tax Authorities [Member] | Valuation Allowance, Operating Loss Carryforwards [Member]      
Income Taxes [Line Items]      
Valuation allowance 536,000 590,000  
U.S. State Tax [Member] | Valuation Allowance, Operating Loss Carryforwards [Member]      
Income Taxes [Line Items]      
Valuation allowance 464,000 518,000  
Canada and China [Member]      
Income Taxes [Line Items]      
Valuation allowance 0 0  
U.S. Tax Authorities [Member]      
Income Taxes [Line Items]      
Income tax expense (benefit) related to changes in the valuation allowance for deferred tax assets $ (54,000) $ (43,000) $ (105,000)