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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Business Combinations (Detail) - USD ($)			1 Months Ended				3 Months Ended				12 Months Ended
Business Combinations (Detail) - USD ($)	Jun. 22, 2018	Apr. 01, 2018	Sep. 30, 2019	Jun. 30, 2019	Aug. 31, 2018	May 31, 2018	Apr. 28, 2019	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 28, 2019	Apr. 29, 2018
Business Acquisition [Line Items]
Contingent consideration-earn-out obligation							$ 5,856,000				$ 5,856,000
Carrying amount of non-controlling interest							4,314,000				4,314,000
net loss (income) attributable to non-controlling interest							143,000	$ 94,000	$ (11,000)	$ (8,000)	218,000
Net income (loss)											$ (726,000)
Read Window Products, LLC [Member]
Business Acquisition [Line Items]
Purchase price		$ 5,700,000
Payment for acquisition		4,500,000				$ 375,000
Goodwill, statutory period deductible for income tax purposes											15 years
Contingent consideration arrangement, description											The Asset Agreement contains a contingent consideration arrangement that requires us to pay a former shareholder of Read an earn-out payment based on adjusted EBITDA, as defined in the Asset Agreement, for calendar year 2018 in excess of fifty percent of a pre-established adjusted EBITDA.
Contingent consideration arrangement, basis for amount											based on actual financial results in relation to the pre-established adjusted EBITDA target, a contingent payment is not required under the terms of the agreement, and therefore, no contingent liability has been recorded.
Revenue		880,000
Net income (loss)		$ 5,000
eLuxury [Member]
Business Acquisition [Line Items]
Purchase price	$ 12,500,000
Payment for acquisition	$ 11,600,000				$ 185,000
Contingent consideration arrangement, description											the Equity Agreement contains a contingent consideration arrangement that requires us to pay the seller, who is also the owner of the noncontrolling interest, an earn-out payment based on a multiple of adjusted EBITDA, as defined in the Equity Agreement, for the twelve-month period ending August 31, 2021, less $12.0 million.
Contingent consideration arrangement, basis for amount											We recorded a contingent liability at the acquisition date for this earn-out obligation at its fair value totaling $5.6 million based on the Black Scholes pricing model.
Majority ownership percentage acquired	80.00%
Consideration for acquisition	$ 18,130,000
Contingent consideration-earn-out obligation	$ 5,600,000
Carrying amount of non-controlling interest							$ 4,500,000				$ 4,500,000
Revenue											16,000,000
Selling, General and Administrative Expenses [Member] \| Read Window Products, LLC [Member]
Business Acquisition [Line Items]
Business acquisition costs												$ 339,000
Selling, General and Administrative Expenses [Member] \| eLuxury [Member]
Business Acquisition [Line Items]
Business acquisition costs											$ 270,000
Customer Relationships [Member] \| Read Window Products, LLC [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets, useful life											9 years
Minimum [Member] \| Equipment [Member] \| Read Window Products, LLC [Member]
Business Acquisition [Line Items]
Property, plant and equipment, useful life											3 years
Maximum [Member] \| Equipment [Member] \| Read Window Products, LLC [Member]
Business Acquisition [Line Items]
Property, plant and equipment, useful life											10 years
eLuxury [Member]
Business Acquisition [Line Items]
Noncontrolling interest	20.00%
net loss (income) attributable to non-controlling interest											$ (218,000)
eLuxury [Member] \| Minimum [Member] \| Equipment [Member]
Business Acquisition [Line Items]
Property, plant and equipment, useful life											5 years
eLuxury [Member] \| Maximum [Member] \| Equipment [Member]
Business Acquisition [Line Items]
Property, plant and equipment, useful life											10 years
Shareholders' equity attributable to Culp Inc. \| eLuxury [Member]
Business Acquisition [Line Items]
Net income (loss) allocation percentage	70.00%
Non-Controlling Interest \| eLuxury [Member]
Business Acquisition [Line Items]
Net income (loss) allocation percentage	30.00%
Scenario, Forecast [Member] \| Read Window Products, LLC [Member]
Business Acquisition [Line Items]
Payment for acquisition				$ 763,000
Scenario, Forecast [Member] \| eLuxury [Member]
Business Acquisition [Line Items]
Payment for acquisition			$ 749,000