Income Taxes (Tables)

12 Months Ended

Apr. 26, 2013

Income Taxes [Abstract]

Schedule of Components of and Provision for Income Taxes

	52 Weeks Ended		52 Weeks Ended		52 Weeks Ended
	April 26, 2013		April 27, 2012		April 29, 2011
Income before income taxes:
Domestic	$	74,949,502	$	63,865,045	$	50,330,220
Foreign		325,123		(3,443,617)		(1,665,289)
	$	75,274,625	$	60,421,428	$	48,664,931
Provision for current income tax expense:
Federal	$	13,987,217	$	779,690	$	242,547
State and local		1,692,119		772,013		530,089
Foreign		101,281		125,738		64,822
	$	15,780,617	$	1,677,441	$	837,458
Provision for deferred income tax expense:
Federal	$	13,066,858	$	21,583,269	$	18,254,023
State and local		69,648		1,082,986		9,804
Discrete items (1)		0		0		(17,162,064)
	$	13,136,506	$	22,666,255	$	1,101,763
Total provision for income tax expense	$	28,917,123	$	24,343,696	$	1,939,221

Schedule of Effective Income Tax Rate Reconciliation

	52 Weeks Ended		52 Weeks Ended		52 Weeks Ended
	April 26, 2013		April 27, 2012		April 29, 2011
U.S. statutory rate	35.0	%	35.0	%	35.0	%
Change in deferred tax valuation allowance	(0.1)		0		0
Shortfall on settlement of options and restricted stock	0		1.4		2.6
Reduction in valuation allowance due to shortfall	0		0		(1.7)
Foreign taxes	0.1		0.2		0.1
State and local tax provision, net of federal benefit	2.3		2.6		2.8
Research and development tax credit (1)	(1.4)		(1.1)		(1.2)
Gain on warrant liability	(0.6)		0		0
Contingency for uncertain tax positions (2)	1.8		0		4.5
Other, net	1.3		2.2		1.3
Discrete items (3)	0		0		(39.5)
Effective tax rate	38.4	%	40.3	%	3.9	%

Significant Components of Deferred Tax Assets

	April 26, 2013		April 27, 2012
Deferred tax assets (liabilities):
Federal net operating loss carryforwards	$	11,652,605	$	36,967,643
Foreign net operating loss carryforwards		12,309,347		12,957,928
State net operating loss carryforwards		882,678		1,785,714
Tax credit carryforwards		7,084,538		4,780,962
Deferred compensation		6,119,515		7,877,434
Accruals and reserves		2,102,427		2,213,570
Licensing income and expense		776,467		1,214,115
Property and equipment		(789,106)		(145,692)
Other		4,166,569		1,460,454
Total deferred tax assets		44,305,040		69,112,128
Deferred tax valuation allowance		(26,181,763)		(37,852,345)
Net deferred tax assets	$	18,123,277	$	31,259,783

Deferred Tax Assets Current and Non-Current

	April 26, 2013		April 27, 2012
Current deferred tax asset	$	17,992,339	$	27,971,835
Current valuation allowance		(7,622,378)		(10,663,030)
Non-current deferred tax asset		27,236,316		41,611,106
Non-current valuation allowance		(18,559,385)		(27,189,315)
		19,046,892		31,730,596
Current deferred tax liability		(71,969)		(314,596)
Non-current deferred tax liability		(851,646)		(156,217)
		(923,615)		(470,813)
Net deferred tax assets	$	18,123,277	$	31,259,783

Schedule of Unrecognized Tax Benefits Roll Forward

	52 Weeks Ended		52 Weeks Ended		52 Weeks Ended
	April 26, 2013		April 27, 2012		April 29, 2011
Balance at beginning of year	$	6,075,693	$	6,326,041	$	4,703,172
Tax positions related to current year		1,339,561		0		2,260,226
Tax positions related to prior years		(335,903)		(250,348)		(757,792)
Change in effective tax rate (federal)		0		0		120,435
Balance at end of year	$	7,079,351	$	6,075,693	$	6,326,041