|
Property And Equipment (Details) (USD $)
In Thousands, unless otherwise specified
|
12 Months Ended |
|
Dec. 28, 2013
|
Dec. 29, 2012
|
Dec. 31, 2011
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, gross |
$ 111,903
|
$ 111,019
|
|
| Less accumulated depreciation and amortization |
62,724
|
59,049
|
|
| Property and equipment, net |
49,179
|
51,970
|
|
| Property and equipment, net |
59,180
|
61,751
|
|
| Depreciation |
8,152
|
7,717
|
7,431
|
|
Buildings [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
40 years
|
|
|
| Property and equipment, gross |
39,500
|
40,766
|
|
|
Laboratory and Production Equipment [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, gross |
23,383
|
22,366
|
|
|
Sound and Video Library [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
5 years
|
|
|
| Property and equipment, gross |
600
|
600
|
|
|
Computer Equipment and Software [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, gross |
32,960
|
32,639
|
|
|
Furniture and Fixtures [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, gross |
5,346
|
5,350
|
|
|
Automobiles [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, gross |
330
|
285
|
|
|
Leasehold Improvements [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, gross |
7,699
|
6,817
|
|
|
Land Improvements [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
15 years
|
|
|
| Property and equipment, gross |
2,085
|
2,196
|
|
|
Land [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, net |
7,315
|
8,211
|
|
|
Deposits And Projects In Process [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, net |
$ 2,686
|
$ 1,570
|
|
|
Minimum [Member] | Laboratory and Production Equipment [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
5 years
|
|
|
|
Minimum [Member] | Computer Equipment and Software [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
3 years
|
|
|
|
Minimum [Member] | Furniture and Fixtures [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
3 years
|
|
|
|
Minimum [Member] | Automobiles [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
3 years
|
|
|
|
Minimum [Member] | Leasehold Improvements [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
3 years
|
|
|
|
Maximum [Member] | Laboratory and Production Equipment [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
7 years
|
|
|
|
Maximum [Member] | Computer Equipment and Software [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
5 years
|
|
|
|
Maximum [Member] | Furniture and Fixtures [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
5 years
|
|
|
|
Maximum [Member] | Automobiles [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
5 years
|
|
|
|
Maximum [Member] | Leasehold Improvements [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Useful life |
5 years
|
|
|