| **Restructuring Charges (Details) (USD $)**                                                    | 12 Months Ended |
|------------------------------------------------------------------------------------------------|-----------------|
||
| **Restructuring Reserve [Roll Forward]**                                                       |            |   |   |
| Beginning Balance                                                                              | $ 584,000       | $ 6,049,000 | $ 733,000 |
| Restructuring Charges                                                                          | (1,289,000)     | (1,087,000) | (10,857,000) |
| Payments for restructuring, severance and other charges                                        | (1,339,000)     | (6,552,000) | (5,541,000) |
| Ending Balance                                                                                 | 534,000         | 584,000 | 6,049,000 |
| Restructuring Plan Fiscal Two Zero One Four [Member] | Severance and employment costs [Member] |            |   |   |
| **Restructuring Reserve [Roll Forward]**                                                       |            |   |   |
| Restructuring Charges                                                                          | (1,257,000)     |   |   |
| Payments for restructuring, severance and other charges                                        | (723,000)       |   |   |
| Ending Balance                                                                                 | 534,000         |   |   |
| Fiscal 2012 Restructuring Plan [Member] | Severance and employment costs [Member]              |            |   |   |
| **Restructuring Reserve [Roll Forward]**                                                       |            |   |   |
| Beginning Balance                                                                              | 348,000         | 5,257,000 |   |
| Restructuring Charges                                                                          | 0               | (1,146,000) | (7,091,000) |
| Payments for restructuring, severance and other charges                                        | (348,000)       | (6,055,000) | (1,834,000) |
| Ending Balance                                                                                 | 0               | 348,000 | 5,257,000 |
| Fiscal 2012 Restructuring Plan [Member] | Facilities costs [Member]                            |            |   |   |
| **Restructuring Reserve [Roll Forward]**                                                       |            |   |   |
| Beginning Balance                                                                              |            | 297,000 |   |
| Restructuring Charges                                                                          |            | (57,000) | (3,223,000) |
| Payments for restructuring, severance and other charges                                        |            | (240,000) | (2,926,000) |
| Ending Balance                                                                                 |            | 0 | 297,000 |
| Fiscal 2009 Restructuring Plan [Member] | Severance and employment costs [Member]              |            |   |   |
| **Restructuring Reserve [Roll Forward]**                                                       |            |   |   |
| Beginning Balance                                                                              |            |   | 289,000 |
| Restructuring Charges                                                                          |            |   | (308,000) |
| Payments for restructuring, severance and other charges                                        |            |   | (597,000) |
| Ending Balance                                                                                 |            |   | 0 |
| Fiscal 2009 Restructuring Plan [Member] | Facilities costs [Member]                            |            |   |   |
| **Restructuring Reserve [Roll Forward]**                                                       |            |   |   |
| Beginning Balance                                                                              | 236,000         | 495,000 | 444,000 |
| Restructuring Charges                                                                          | (32,000)        | (2,000) | (235,000) |
| Payments for restructuring, severance and other charges                                        | (268,000)       | (257,000) | (184,000) |
| Ending Balance                                                                                 | $ 0             | $ 236,000 | $ 495,000 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4
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| X                                                                                                                                                                   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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