Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 27, 2021	Mar. 28, 2021
Assets, Current [Abstract]
Cash and cash equivalents	$ 5,222	$ 2,998
Trade accounts receivables, net	90,936	90,603
Inventories	67,943	63,864
Income taxes receivable	0	175
Prepaid expenses and other current assets	3,671	5,367
Total current assets	167,772	163,007
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT, AND EQUIPMENT:	301,953	300,404
Less accumulated depreciation	159,707	155,792
Net property, plant, and equipment	142,246	144,612
Other Assets [Abstract]
Right-of-use assets	11,432	11,630
Goodwill	70,754	70,720
Intangible assets, net of accumulated amortization	74,787	76,368
Other	8,024	6,213
Total other assets	164,997	164,931
Total assets	475,015	472,550
Liabilities, Current [Abstract]
Accounts payable — trade	38,052	37,313
Accrued payroll and employee benefits	8,354	18,048
Income tax payable	5,218	0
Current portion of long-term debt	9,907	9,907
Short-term lease liability	1,620	1,587
Container deposits	1,501	1,452
Other current liabilities	1,860	2,155
Total current liabilities	66,512	70,462
LONG-TERM DEBT, LESS CURRENT PORTION	85,868	88,845
LONG-TERM LEASE LIABILITY	9,914	10,231
PENSION WITHDRAWAL LIABILITY	4,543	4,631
DEFERRED INCOME TAXES	24,445	24,445
DEFERRED COMPENSATION LIABILITY	8,032	7,322
OTHER LONG-TERM LIABILITIES	496	1,368
Total liabilities	199,810	207,304
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS’ EQUITY:
Common stock; authorized: 60,000,000 shares of $0.01 par value; 20,946,404 and 20,969,746 shares issued and outstanding as of June 27, 2021 and March 28, 2021, respectively	210	210
Additional paid-in capital	47,069	51,138
Retained earnings	227,926	213,898
Total shareholders’ equity	275,205	265,246
Total liabilities and shareholders’ equity	$ 475,015	$ 472,550