Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 28, 2020	Mar. 29, 2020
Assets, Current [Abstract]
Cash and cash equivalents	$ 4,510	$ 4,277
Trade receivables — less allowance for doubtful accounts: $530 as of June 28, 2020 and $784 as of March 29, 2020	69,453	67,391
Inventories	63,389	54,436
Prepaid expenses and other current assets	3,053	4,927
Total current assets	140,405	131,031
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT, AND EQUIPMENT:	271,990	267,221
Less accumulated depreciation	144,929	140,877
Net property, plant, and equipment	127,061	126,344
Other Assets [Abstract]
Right-of-use assets	8,755	9,090
Goodwill	58,440	58,440
Intangible assets, net	59,384	60,653
Other	5,417	3,770
Total other assets	131,996	131,953
Total assets	399,462	389,328
Liabilities, Current [Abstract]
Accounts payable — trade	31,069	34,129
Accrued payroll and employee benefits	6,827	13,538
Income tax payable	4,323	59
Current portion of long-term debt	9,907	9,907
Short-term lease liability	1,493	1,523
Container deposits	1,408	1,376
Other current liabilities	1,654	1,688
Total current liabilities	56,681	62,220
LONG-TERM DEBT, LESS CURRENT PORTION	55,775	49,751
LONG-TERM LEASE LIABILITY	7,306	7,649
PENSION WITHDRAWAL LIABILITY	4,892	4,978
DEFERRED INCOME TAXES	25,102	25,106
OTHER LONG-TERM LIABILITIES	6,277	6,140
Total liabilities	156,033	155,844
Commitments and Contingencies	0	0
SHAREHOLDERS’ EQUITY:
Common stock; authorized: 30,000,000 shares of $0.05 par value; 10,515,835 and 10,512,229 shares issued and outstanding as of June 28, 2020 and March 29, 2020, respectively	526	526
Additional paid-in capital	50,736	50,090
Retained earnings	192,256	182,947
Accumulated other comprehensive loss	(89)	(79)
Total shareholders’ equity	243,429	233,484
Total liabilities and shareholders’ equity	$ 399,462	$ 389,328