CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
Oct. 28, 2016	Oct. 23, 2015
Operating activities:
Net income	$ 9,381	$ 10,711
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	35,218	40,260
Impairments	16,523	285
(Gain) Loss on disposal of fixed assets	(1,664)	1,603
(Gain) Loss on rabbi trust assets	(967)	2,453
Loss (Gain) on deferred compensation	1,115	(1,462)
Share-based compensation	3,263	3,329
Accretion on long-term note receivable	(1,133)	(1,011)
Deferred income taxes	(5,903)	161
Amortization of deferred financing costs	720	1,336
Cash provided by (used for) assets and liabilities:
Accounts receivable	(10,930)	(5,597)
Inventories	(8,338)	(4,558)
Prepaid expenses and other current assets	491	(1,136)
Accounts payable	4,110	8,454
Federal and state income taxes	(11,185)	10,719
Accrued wages and related liabilities	(6,941)	(7,710)
Self-insurance	(1,740)	1,904
Accrued non-income taxes	(1,450)	2,072
Deferred revenue	(2,096)	(1,794)
Other assets and liabilities	(7,060)	6,332
Net cash provided by operating activities	11,414	66,351
Investing activities:
Purchase of property, plant and equipment	(37,086)	(26,667)
Proceeds from sale of property, plant and equipment	10,688	58,451
Deposits and other	130	(566)
Net cash (used in) provided by investing activities	(26,268)	31,218
Financing activities:
Cash dividends paid	(13,452)	(14,040)
Gross proceeds from credit facility borrowings and other long-term debt	189,179	380,192
Gross repayments of credit facility borrowings and other long-term debt	(166,490)	(356,610)
Payments of debt issuance costs	0	(2,517)
Purchase of treasury stock	0	(104,929)
Proceeds from share-based compensation	0	214
Cash paid for taxes on share-based compensation	(667)	(1,007)
Excess tax benefits from share-based compensation	(1,729)	131
Net cash provided by (used in) financing activities	6,841	(98,566)
Net decrease in cash and equivalents	(8,013)	(997)
Cash and equivalents at the beginning of the period	12,896	6,358
Cash and equivalents at the end of the period	$ 4,883	$ 5,361

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Name:	us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

Name:	us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration