Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Oct. 02, 2015	Oct. 03, 2014
Property, plant and equipment, accumulated depreciation	$ 116,902	$ 108,668
Preferred Stock, Shares Issued	0	0
Treasury stock, shares	33,241	11,203
Class A [Member]
Common stock, shares issued	8,770,612	8,769,426
Common stock, shares outstanding	8,770,612	8,769,426
Class B [Member]
Common stock, shares issued	1,212,382	1,212,382
Common stock, shares outstanding	1,212,382	1,212,382