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Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Capital in Excess of Par Value [Member] | Retained Earnings [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Items [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Jan. 02, 2016 |  | 14,624,159 |  |  | 3,850,779 |  |
Unrealized Gain (Loss), Net of Tax, at December 31, 2016 at Jan. 02, 2016 | $ 267,945 | $ 146 | $ 100,536 | $ 297,258 | $ (94,359) | $ (36,972) | $ 1,336
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net Income | 6,991 |  |  | 6,876 |  |  | 115
Dividend declared | (2,063) |  |  | (2,063) |  |  |
Activity under stock plans (in shares) |  |  |  |  | (80,942) |  |
Activity under stock plans | (656) |  | (2,639) |  | $ 1,983 |  |
Other comprehensive items | 5,386 |  |  |  |  | 5,327 | 59
Ending balance (in shares) at Apr. 02, 2016 |  | 14,624,159 |  |  | 3,769,837 |  |
Unrealized Gain (Loss), Net of Tax, at April 1, 2017 at Apr. 02, 2016 | 277,603 | $ 146 | 97,897 | 302,071 | $ (92,376) | (31,645) | 1,510
Beginning balance (in shares) at Dec. 31, 2016 |  | 14,624,159 |  |  | 3,686,532 |  |
Unrealized Gain (Loss), Net of Tax, at December 31, 2016 at Dec. 31, 2016 | 284,279 | $ 146 | 101,405 | 321,050 | $ (90,335) | (49,637) | 1,650
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net Income | 9,067 |  |  | 8,951 |  |  | 116
Dividend declared | (2,310) |  |  | (2,310) |  |  |
Activity under stock plans (in shares) |  |  |  |  | (63,020) |  |
Activity under stock plans | (887) |  | (2,431) |  | $ 1,544 |  |
Other comprehensive items | 5,141 |  |  |  |  | 5,095 | 46
Ending balance (in shares) at Apr. 01, 2017 |  | 14,624,159 |  |  | 3,623,512 |  |
Unrealized Gain (Loss), Net of Tax, at April 1, 2017 at Apr. 01, 2017 | $ 295,290 | $ 146 | $ 98,974 | $ 327,691 | $ (88,791) | $ (44,542) | $ 1,812

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