|
Intangibles, Net (Gross Carrying Amount And Amortization Of Intangible Assets) (Details) (USD $)
|
12 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Mar. 31, 2012
|
Mar. 26, 2011
|
|||||
| Finite-Lived Intangible Assets [Line Items] | ||||||
| Gross Amount | $ 41,090,000 | $ 43,831,000 | ||||
| Accumulated Amortization | (22,849,000) | (23,706,000) | ||||
|
Core Technology [Member]
|
||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||
| Gross Amount | 1,390,000 | 1,390,000 | ||||
| Accumulated Amortization | (1,390,000) | (1,390,000) | ||||
| Weighted-Average Amortization Period | 9 years | |||||
|
License Agreements [Member]
|
||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||
| Gross Amount | 440,000 | 440,000 | ||||
| Accumulated Amortization | (440,000) | (440,000) | ||||
| Weighted-Average Amortization Period | 9 years | |||||
|
Existing Technology [Member]
|
||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||
| Gross Amount | 17,235,000 | 17,235,000 | ||||
| Accumulated Amortization | (7,318,000) | (6,321,000) | ||||
| Weighted-Average Amortization Period | 13 years 3 months 18 days | |||||
|
Trademarks [Member]
|
||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||
| Gross Amount | 2,758,000 | [1] | 2,758,000 | [1] | ||
| Accumulated Amortization | (320,000) | [1] | (320,000) | [1] | ||
| Weighted-Average Amortization Period | 4 years | |||||
| Gross amount excluded from weighted-average amortization period | 2,400,000 | |||||
|
Non-compete Agreements [Member]
|
||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||
| Gross Amount | 398,000 | 398,000 | ||||
| Accumulated Amortization | (258,000) | (179,000) | ||||
| Weighted-Average Amortization Period | 5 years | |||||
|
Customer Relationships [Member]
|
||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||
| Gross Amount | 4,682,000 | 4,682,000 | ||||
| Accumulated Amortization | (1,515,000) | (1,179,000) | ||||
| Weighted-Average Amortization Period | 14 years 7 months 6 days | |||||
|
Technology Licenses [Member]
|
||||||
| Finite-Lived Intangible Assets [Line Items] | ||||||
| Gross Amount | 14,187,000 | 16,928,000 | ||||
| Accumulated Amortization | $ (11,608,000) | $ (13,877,000) | ||||
| Weighted-Average Amortization Period | 3 years 3 months 18 days | |||||
|
||||||