Stock-based Compensation LTIP (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
	Jun. 29, 2015	Jun. 30, 2016	Jun. 30, 2015
Stock Options
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		7,400
Expiration period		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		$ 19	$ 77
Stock Options | Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		9	34
Stock Options | Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		10	42
Stock Options | Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		$ 0	1
Stock Options | Minimum
Stock-based Compensation
Vesting period		1 year
Stock Options | Maximum
Stock-based Compensation
Vesting period		3 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		$ 545	499
Restricted Stock | Executive leadership
Stock-based Compensation
Period of restriction for sale of shares		90 days
Restricted Stock | Chief Executive Officer
Stock-based Compensation
Period of restriction for sale of shares		90 days
Restricted Stock | Director
Stock-based Compensation
Period of restriction for sale of shares		90 days
Restricted Stock | Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		$ 192	151
Restricted Stock | Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		347	343
Restricted Stock | Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		$ 6	5
Omnibus Equity Incentive Plan 2011 [Member] | Stock Options
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		6,600
Prior Plans [Member] | Stock Options
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		800
Deferred Compensation, Share-based Payments [Member]
Stock-based Compensation
Performance period		P2Y
2013/2014 LTIP | Restricted stock units
Stock-based Compensation
Vesting period		3 years
2014/2015 LTIP | Restricted stock units
Stock-based Compensation
Vesting period		3 years
Restricted Stock | Deferred Compensation, Share-based Payments [Member]
Stock-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 2.46
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	613
Share-based Compensation Award, Tranche One [Member] | Restricted Stock | Deferred Compensation, Share-based Payments [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares		202
Share-based Compensation Award, Tranche Two [Member] | Restricted Stock | Deferred Compensation, Share-based Payments [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares		202
Share-based Compensation Award, Tranche Three [Member] | Restricted Stock | Deferred Compensation, Share-based Payments [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares		209
Deferred Compensation, Share-based Payments [Member] | Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		$ 183	228
Deferred Compensation, Share-based Payments [Member] | Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		427	458
Deferred Compensation, Share-based Payments [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		664	703
Deferred Compensation, Share-based Payments [Member] | Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Allocated Share-based Compensation Expense		$ 54	$ 17
Long Term Incentive Plan 2016 2017 [Member] | Deferred Compensation, Share-based Payments [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number		178
Long Term Incentive Plan 2015 2016 [Member] | Deferred Compensation, Share-based Payments [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number		111
Long Term Incentive Plan 2015 2016 [Member] | Deferred Compensation, Share-based Payments [Member] | Stock Options with Performance Conditions [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number		103
Long Term Incentive Plan 2014 2015 [Member] | Deferred Compensation, Share-based Payments [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number		118
Long Term Incentive Plan 2014 2015 [Member] | Deferred Compensation, Share-based Payments [Member] | Stock Options with Performance Conditions [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number		73