Note 14 - Stock-Based Compensation (Details) (USD $)	1 Months Ended	12 Months Ended			1 Months Ended			12 Months Ended						1 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended				1 Months Ended	12 Months Ended			0 Months Ended	1 Months Ended
	Apr. 30, 2012	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012	Apr. 30, 2012 6 Months After The Commencement [Member] Restricted Stock Units (RSUs) [Member]	Apr. 30, 2012 On The Last Day of FY 2013 [Member] Restricted Stock Units (RSUs) [Member]	Jan. 31, 2012 Employee Stock Option [Member] Chief Executive Officer [Member]	Mar. 30, 2014 Employee Stock Option [Member] Chief Executive Officer [Member]	Mar. 31, 2013 Employee Stock Option [Member] Chief Executive Officer [Member]	Apr. 01, 2012 Employee Stock Option [Member] Chief Executive Officer [Member]	Mar. 30, 2014 Employee Stock Option [Member]	Mar. 31, 2013 Employee Stock Option [Member]	Apr. 01, 2012 Employee Stock Option [Member]	Jul. 31, 2009 July 2009 PRSUs [Member] Certain Executives [Member]	Mar. 30, 2014 July 2009 PRSUs [Member] Certain Executives [Member]	Mar. 31, 2013 July 2009 PRSUs [Member] Certain Executives [Member]	Apr. 01, 2012 July 2009 PRSUs [Member] Certain Executives [Member]	Mar. 31, 2012 Performance-Based RSUs [Member] Chief Executive Officer [Member]	Mar. 30, 2014 Performance-Based RSUs [Member] Chief Executive Officer [Member]	Mar. 31, 2013 Performance-Based RSUs [Member] Chief Executive Officer [Member]	Apr. 01, 2012 Performance-Based RSUs [Member] Chief Executive Officer [Member]	Jun. 30, 2013 Performance-Based RSUs [Member] Certain Executives [Member]	Mar. 30, 2014 Performance-Based RSUs [Member] Certain Executives [Member]	Mar. 30, 2014 Performance-Based RSUs [Member] Cadeka Employees [Member]	Jan. 31, 2014 Performance-Based RSUs [Member] Former Stretch Employees [Member]	Mar. 31, 2013 Restricted Stock Units (RSUs) [Member] 2013 Inventive Program [Member]	Mar. 30, 2014 Restricted Stock Units (RSUs) [Member] 2014 Incentive Program [Member]	Apr. 30, 2012 Restricted Stock Units (RSUs) [Member] Chief Executive Officer [Member]	Mar. 31, 2013 Restricted Stock Units (RSUs) [Member] Chief Executive Officer [Member]	Mar. 30, 2014 Restricted Stock Units (RSUs) [Member]	Mar. 31, 2013 Restricted Stock Units (RSUs) [Member]	Apr. 01, 2012 Restricted Stock Units (RSUs) [Member]	Oct. 31, 2013 October 2013 PRSUs [Member] Certain Executives [Member]	Mar. 30, 2014 October 2013 PRSUs [Member] Certain Executives [Member]	Apr. 01, 2012 Stock Options and PRSUs [Member] Chief Executive Officer [Member]	Mar. 30, 2014 Employee Stock Participation Plan [Member]	Sep. 15, 2010 2006 Plan [Member]	Jan. 31, 2014 Chief Executive Officer [Member]	Jan. 31, 2012 Chief Executive Officer [Member]
Note 14 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent																																				95.00%
Stock Based Compensation Equity Incentive Plan	2
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in Shares)																																					5,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)		4,500,000																																			8,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)		1,200,000
Share Price (in Dollars per share)											$ 11.71	$ 10.50	$ 8.40
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)		2,482,650	2,540,010	3,100,595																																		140,000	480,000
Share Based Compensation Arrangement By Share Based Payment Award, Vesting, Number of Installments							4											3				3			3								3
Allocated Share-based Compensation Expense		$ 8,852,000	$ 4,788,000	$ 3,750,000				$ 260,000	$ 260,000	$ 65,000					$ 0	$ 0	$ 19,000		$ 732,000	$ 448,000	$ 48,000		$ 300,000	$ 1,200,000	$ 0	$ 1,200,000	$ 700,000		$ 250,000					$ 100,000	$ 114,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)														99,000				300,000				50,000			80,000			29,000		828,995	331,894	481,650	35,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period														3 years				3 years				3 years			3 years								3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage					50.00%	50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate		0.00%