Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jul. 30, 2016	Apr. 30, 2016
Series C Preferred Stock [Member]
Liabilities and Shareholders' Equity
Preferred stock, $1 par value - 1,000,000 shares authorized: Series C - 150,000 shares issued	$ 150	$ 150
Treasury stock, value	(5,100)	(5,100)
Treasury Stock, Common [Member]
Liabilities and Shareholders' Equity
Treasury stock, value	(12,900)	(12,900)
Cash and equivalents	132,576	105,577
Trade receivables - net	75,834	61,046
Inventories	51,819	47,922
Deferred income taxes net	4,244	4,454
Prepaid and other assets	3,228	4,672
Total current assets	267,701	223,671
Property, plant and equipment - net	62,726	61,932
Goodwill	13,145	13,145
Intangible assets	1,615	1,615
Other assets	5,097	5,135
Total assets	350,284	305,498
Accounts payable	47,526	49,391
Accrued liabilities	30,610	26,195
Income taxes payable	12,853	28
Total current liabilities	90,989	75,614
Deferred income taxes net	14,445	14,474
Other liabilities	9,182	9,258
Common stock, $.01 par value - 75,000,000 shares authorized; 50,590,634 shares issued (50,588,734 shares at April 30)	506	506
Additional paid-in capital	34,676	34,570
Retained earnings	219,728	190,733
Accumulated other comprehensive loss	(1,392)	(1,807)
Total shareholders' equity	235,668	206,152
Total liabilities and shareholders' equity	$ 350,284	$ 305,498

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.