CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 30, 2016	Apr. 30, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 29,778	$ 28,328
Restricted cash	193	198
Marketable securities	20,200	24,672
Accounts receivable, net	86,382	77,554
Inventories, net	68,593	69,827
Costs and estimated earnings in excess of billings	50,172	30,200
Current maturities of long-term receivables	3,063	3,172
Prepaid expenses and other assets	5,936	6,468
Income tax receivables	762	4,812
Total current assets	265,079	245,231
Long-term receivables, less current maturities	3,543	3,866
Goodwill	7,894	8,116
Intangibles, net	7,012	7,721
Investment in affiliates and other assets	2,521	2,414
Deferred income taxes	9,418	9,437
Total noncurrent assets	30,388	31,554
PROPERTY AND EQUIPMENT:
Land	2,142	2,155
Buildings	65,047	65,247
Machinery and equipment	82,448	82,973
Office furniture and equipment	5,563	14,746
Computer software and hardware	49,238	48,917
Equipment held for rental	374	374
Demonstration equipment	7,991	8,026
Transportation equipment	6,521	6,596
Property and equipment, gross	219,324	229,034
Less accumulated depreciation	148,282	155,871
Property and equipment, net	71,042	73,163
TOTAL ASSETS	366,509	349,948
CURRENT LIABILITIES:
Accounts payable	50,605	43,441
Accrued expenses	26,501	23,532
Warranty obligations	15,450	16,564
Billings in excess of costs and estimated earnings	12,467	10,361
Customer deposits (billed or collected)	20,650	16,012
Deferred revenue (billed or collected)	11,740	10,712
Current portion of other long-term obligations	191	585
Income taxes payable	191	310
Total current liabilities	137,795	121,517
Long-term warranty obligations	14,466	13,932
Long-term deferred revenue (billed or collected)	5,388	5,603
Other long-term obligations, less current maturities	4,860	4,059
Long-term income tax payable	3,134	3,016
Deferred income taxes	720	754
Total long-term liabilities	28,568	27,364
TOTAL LIABILITIES	166,363	148,881
SHAREHOLDERS' EQUITY:
Common Stock, no par value, authorized 120,000,000 shares; 44,113,520 and 43,998,635 shares issued and outstanding at July 30, 2016 and April 30, 2016, respectively	51,347	51,347
Additional paid-in capital	36,059	35,351
Retained earnings	118,405	117,276
Treasury Stock, at cost, 303,957 and 19,680 shares at July 30, 2016 and April 30, 2016, respectively	(1,834)	(9)
Accumulated other comprehensive loss	(3,831)	(2,898)
TOTAL SHAREHOLDERS' EQUITY	200,146	201,067
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 366,509	$ 349,948