Long-term debt and revolving lines of credit - Schedule of long-term debt and revolving lines of credit (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Mar. 30, 2019
Long-term debt and revolving lines of credit
Total debt	$ 339,606	$ 275,396
Less current portion	(16,002)	(12,527)
Less deferred financing costs	(6,119)	(7,909)
Total long-term debt	317,485	254,960
Senior secured term loan facility
Long-term debt and revolving lines of credit
Total debt	252,282	257,391
Obligations under capital leases
Long-term debt and revolving lines of credit
Total debt	274	494
2014 Elfa revolving credit facility
Long-term debt and revolving lines of credit
Total debt		5,511
The 2019 Elfa Term Loan Facility
Long-term debt and revolving lines of credit
Total debt	9,050
Revolving credit facility
Long-term debt and revolving lines of credit
Total debt	$ 78,000	$ 12,000