Segments of Business (Summary of Operations by Business Unit) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jul. 03, 2015	Jun. 27, 2014	Jul. 03, 2015	Jun. 27, 2014	Oct. 03, 2014
Segment Reporting Information [Line Items]
Net sales	$ 140,883	$ 137,133	$ 344,816	$ 340,506
Operating profit (loss)	16,421	9,332	16,713	17,970
Total assets (end of period)	317,846	308,731	317,846	308,731	$ 288,626
Marine Electronics [Member]
Segment Reporting Information [Line Items]
Net sales	86,064	79,904	218,819	209,887
Operating profit (loss)	14,603	14,196	24,146	30,276
Total assets (end of period)	136,484	129,037	136,484	129,037	111,411
Outdoor Equipment [Member]
Segment Reporting Information [Line Items]
Net sales	15,593	15,729	34,115	35,071
Operating profit (loss)	1,811	(4,946)	2,536	(4,561)
Total assets (end of period)	37,159	35,650	37,159	35,650	32,033
Watercraft [Member]
Segment Reporting Information [Line Items]
Net sales	19,428	19,658	38,769	38,285
Operating profit (loss)	2,334	2,002	1,308	(29)
Total assets (end of period)	29,845	32,981	29,845	32,981	20,367
Diving [Member]
Segment Reporting Information [Line Items]
Net sales	19,564	21,599	52,701	56,849
Operating profit (loss)	947	1,561	242	2,315
Total assets (end of period)	65,416	80,026	65,416	80,026	64,933
Other / Corporate [Member]
Segment Reporting Information [Line Items]
Net sales	234	243	412	414
Operating profit (loss)	(3,274)	(3,481)	(11,519)	(10,031)
Total assets (end of period)	48,942	31,037	48,942	31,037	$ 59,882
Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(483)	(400)	(936)	(1,052)
Eliminations [Member] \| Marine Electronics [Member]
Segment Reporting Information [Line Items]
Net sales	134	105	260	177
Eliminations [Member] \| Outdoor Equipment [Member]
Segment Reporting Information [Line Items]
Net sales	19	21	36	36
Eliminations [Member] \| Watercraft [Member]
Segment Reporting Information [Line Items]
Net sales	102	67	122	117
Eliminations [Member] \| Diving [Member]
Segment Reporting Information [Line Items]
Net sales	$ 228	$ 207	$ 518	$ 722

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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