Consolidated Balance Sheets (USD $)	Apr. 26, 2013	Apr. 27, 2012
Current Assets:
Cash and cash equivalents	$ 120,708,572	$ 96,654,275
Restricted cash	99,573	0
Short-term investments	15,000,000	0
Accounts receivable, net	39,450,113	29,266,847
Inventories	17,718,454	14,385,875
Deferred tax assets	10,297,991	16,994,209
Other current assets	4,083,640	3,801,705
Total Current Assets	207,358,343	161,102,911
Property, plant and equipment, net	28,555,742	22,160,671
Intangible assets, net	9,219,999	4,509,612
Long-term investments	10,588,202	9,508,768
Deferred tax assets	7,825,286	14,265,574
Other assets	495,738	360,659
Total Assets	264,043,310	211,908,195
Current Liabilities:
Accounts payable	8,025,512	4,886,448
Accrued liabilities	20,999,966	18,146,188
Convertible notes	0	4,000
Total Current Liabilities	29,025,478	23,036,636
Long-term liabilities	5,449,604	5,402,189
Total Liabilities	34,475,082	28,438,825
Commitments and Contingencies
Stockholders' Equity:
Preferred Stock, $.01 par value per share; 2,500,000 shares authorized; no shares issued and outstanding	0	0
Common Stock, $.01 par value per share; 50,000,000 shares authorized; 31,288,540 shares issued and 27,472,854 shares outstanding at April 26, 2013 and 30,638,605 shares issued and 27,529,320 shares outstanding at April 27, 2012	312,885	306,386
Additional paid-in capital	380,158,961	321,960,886
Common stock warrants	0	25,200,000
Treasury stock, 3,815,686 and 3,109,285 common shares at April 26, 2013 and April 27, 2012, respectively, at cost	(116,160,606)	(83,151,212)
Accumulated other comprehensive income	167,977	421,801
Accumulated deficit	(34,910,989)	(81,268,491)
Total Stockholders' Equity	229,568,228	183,469,370
Total Liabilities and Stockholders' Equity	$ 264,043,310	$ 211,908,195