Investment in ECN Capital Corporation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions		1 Months Ended	3 Months Ended		9 Months Ended		15 Months Ended
	Nov. 13, 2025	Sep. 30, 2023	Dec. 27, 2025	Dec. 28, 2024	Dec. 27, 2025	Dec. 28, 2024	Dec. 27, 2026	Mar. 29, 2025
Schedule of Equity Method Investments [Line Items]
Share of income			$ 913	$ 568	$ 203	$ (1,466)
Investment in the common stock			1,533		1,533			$ 1,584
Value of investment in preferred shares			64,500		64,500			64,500
Floor plan payable			95,298		95,298			106,091
Dividend income			1,200	1,200	2,400	2,400
ECN Capital Corp.
Schedule of Equity Method Investments [Line Items]
Equity investments in ECN		$ 137,800
Common shares purchased		33.6
Percentage of common stock outstanding		12.00%
Cash dividend on preferred Shares		4.00%
CAD per share	$ 3.1
Voting shares		19.90%
Share of income				$ 700	700	$ 100	$ 1,200
Percentage of ownership		51.00%
Investment in the common stock			70,200		70,200			70,200
Aggregate value of investments			74,900		74,900
Commitments on retailer floor plan loans outstanding			102,000		102,000
ECN Capital Corp. | Mandatory convertible preferred shares
Schedule of Equity Method Investments [Line Items]
Number of shares issued		27.5
Triad Financial Services, Inc.
Schedule of Equity Method Investments [Line Items]
Percentage of ownership		49.00%
Floor plan payable			$ 15,200		$ 15,200			$ 35,000