Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2016	Apr. 30, 2015
Current assets:
Cash and cash equivalents	$ 105,220	$ 42,222
Accounts receivable, net of allowance for doubtful accounts of $709 on January 31, 2016 and $722 on April 30, 2015	89,814	55,280
Inventories	75,542	76,895
Prepaid expenses and other current assets	5,981	6,306
Deferred income taxes	16,441	16,373
Total current assets	292,998	197,076
Property, plant, and equipment, net	136,202	133,844
Intangibles, net	65,014	73,768
Goodwill	76,164	75,426
Other assets	6,652	10,811
Assets, Total	577,030	490,925
Current liabilities:
Accounts payable	35,288	32,360
Accrued expenses	20,723	19,021
Accrued payroll	15,430	7,556
Accrued income taxes	1,413	4,224
Accrued taxes other than income	7,704	5,281
Accrued profit sharing	7,875	6,165
Accrued warranty	6,156	6,404
Current portion of notes payable	6,300
Total current liabilities	100,889	81,011
Deferred income taxes	33,311	33,905
Notes payable, net of current portion	167,923	170,933
Other non-current liabilities	10,396	10,706
Total liabilities	$ 312,519	$ 296,555
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $.001 par value, 20,000,000 shares authorized, no shares issued or outstanding
Common stock, $.001 par value, 100,000,000 shares authorized, 70,671,290 shares issued and 55,108,668 shares outstanding on January 31, 2016 and 69,625,081 shares issued and 54,062,459 shares outstanding on April 30, 2015	$ 71	$ 70
Additional paid-in capital	231,800	219,198
Retained earnings	205,663	147,352
Accumulated other comprehensive (loss)/income	(700)	73
Treasury stock, at cost (15,562,622 shares on January 31, 2016 and April 30, 2015)	(172,323)	(172,323)
Total stockholders’ equity	264,511	194,370
Liabilities and Equity, Total	$ 577,030	$ 490,925

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).

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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.