|
Fair Value of Financial Instruments (Details) (USD $)
|
Mar. 29, 2014
|
Dec. 28, 2013
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
$ 42,013,000 |
|
| Asset measured at, fair value |
41,890,000 |
|
|
Recurring [Member]
|
|
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
42,013,000 |
38,917,000 |
| Assets measured at fair value, Unrealized gains |
325,000 |
284,000 |
| Assets measured at fair value, Unrealized losses |
(448,000) |
(472,000) |
| Asset measured at, fair value |
41,890,000 |
38,729,000 |
|
Level 1 [Member] | Recurring [Member]
|
|
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
6,134,000 |
5,914,000 |
| Assets measured at fair value, Unrealized gains |
162,000 |
156,000 |
| Assets measured at fair value, Unrealized losses |
(113,000) |
(65,000) |
| Asset measured at, fair value |
6,183,000 |
6,005,000 |
| Liabilities |
|
|
| Liabilities measured at fair value, Adjusted cost |
|
38,000 |
| Liabilities measured at fair value, Unrealized gains |
0 |
0 |
| Liabilities measured at fair value, Unrealized losses |
0 |
0 |
| Liabilities measured at fair value |
50,000 |
38,000 |
| Convertible Debt, Fair Value Disclosures |
50,000 |
|
|
Level 1 [Member] | Phantom stock units [Member] | Recurring [Member]
|
|
|
| Liabilities |
|
|
| Liabilities measured at fair value, Adjusted cost |
|
38,000 |
| Liabilities measured at fair value, Unrealized gains |
0 |
0 |
| Liabilities measured at fair value, Unrealized losses |
0 |
0 |
| Liabilities measured at fair value |
50,000 |
38,000 |
| Convertible Debt, Fair Value Disclosures |
50,000 |
|
|
Level 1 [Member] | Equity securities [Member] | Recurring [Member]
|
|
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
1,957,000 |
2,049,000 |
| Assets measured at fair value, Unrealized gains |
131,000 |
137,000 |
| Assets measured at fair value, Unrealized losses |
(104,000) |
(64,000) |
| Asset measured at, fair value |
1,984,000 |
2,122,000 |
|
Level 1 [Member] | Mutual funds [Member] | Recurring [Member]
|
|
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
4,177,000 |
3,865,000 |
| Assets measured at fair value, Unrealized gains |
31,000 |
19,000 |
| Assets measured at fair value, Unrealized losses |
(9,000) |
(1,000) |
| Asset measured at, fair value |
4,199,000 |
3,883,000 |
|
Level 2 [Member] | Recurring [Member]
|
|
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
35,879,000 |
33,003,000 |
| Assets measured at fair value, Unrealized gains |
163,000 |
128,000 |
| Assets measured at fair value, Unrealized losses |
(335,000) |
(407,000) |
| Asset measured at, fair value |
35,707,000 |
32,724,000 |
|
Level 2 [Member] | Corporate fixed income [Member] | Recurring [Member]
|
|
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
29,717,000 |
25,240,000 |
| Assets measured at fair value, Unrealized gains |
163,000 |
126,000 |
| Assets measured at fair value, Unrealized losses |
(209,000) |
(250,000) |
| Asset measured at, fair value |
29,671,000 |
25,116,000 |
|
Level 2 [Member] | Municipal bonds [Member] | Recurring [Member]
|
|
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
2,819,000 |
2,775,000 |
| Assets measured at fair value, Unrealized gains |
0 |
1,000 |
| Assets measured at fair value, Unrealized losses |
(32,000) |
(28,000) |
| Asset measured at, fair value |
2,787,000 |
2,748,000 |
|
Level 2 [Member] | Certificates of deposit [Member] | Recurring [Member]
|
|
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
2,383,000 |
4,014,000 |
| Assets measured at fair value, Unrealized gains |
0 |
1,000 |
| Assets measured at fair value, Unrealized losses |
0 |
0 |
| Asset measured at, fair value |
2,383,000 |
4,015,000 |
|
Level 2 [Member] | Asset backed securities [Member] | Recurring [Member]
|
|
|
| Assets |
|
|
| Assets measured at fair value, Adjusted cost |
960,000 |
974,000 |
| Assets measured at fair value, Unrealized gains |
0 |
0 |
| Assets measured at fair value, Unrealized losses |
(94,000) |
(129,000) |
| Asset measured at, fair value |
$ 866,000 |
$ 845,000 |