Segments of Business (Summary of Operations by Business Unit) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2017	Apr. 01, 2016	Mar. 31, 2017	Apr. 01, 2016	Sep. 30, 2016
Segment Reporting Information [Line Items]
Net sales	$ 149,807	$ 134,192	$ 243,536	$ 219,490
Operating profit (loss)	20,458	15,138	20,930	14,238
Total assets	342,302	354,789	342,302	354,789	$ 310,279
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(249)	(380)	(476)	(718)
Intersegment Eliminations [Member] \| Fishing [Member]
Segment Reporting Information [Line Items]
Net sales	95	128	116	170
Intersegment Eliminations [Member] \| Camping [Member]
Segment Reporting Information [Line Items]
Net sales	5	7	12	15
Intersegment Eliminations [Member] \| Watercraft Recreation [Member]
Segment Reporting Information [Line Items]
Net sales	17	21	26	26
Intersegment Eliminations [Member] \| Diving [Member]
Segment Reporting Information [Line Items]
Net sales	132	224	322	507
Operating Segments [Member] \| Fishing [Member]
Segment Reporting Information [Line Items]
Net sales	105,329	90,865	172,379	149,423
Operating profit (loss)	22,838	17,283	30,031	22,978
Total assets	186,108	168,007	186,108	168,007	118,357
Operating Segments [Member] \| Camping [Member]
Segment Reporting Information [Line Items]
Net sales	11,370	11,609	17,098	17,915
Operating profit (loss)	1,011	999	239	797
Total assets	25,508	34,261	25,508	34,261	28,249
Operating Segments [Member] \| Watercraft Recreation [Member]
Segment Reporting Information [Line Items]
Net sales	15,070	14,730	21,278	21,103
Operating profit (loss)	847	831	49	296
Total assets	31,946	33,329	31,946	33,329	19,693
Operating Segments [Member] \| Diving [Member]
Segment Reporting Information [Line Items]
Net sales	17,894	16,836	32,597	30,845
Operating profit (loss)	311	(704)	(750)	(2,578)
Total assets	51,920	67,267	51,920	67,267	77,195
Operating Segments [Member] \| Other / Corporate [Member]
Segment Reporting Information [Line Items]
Net sales	144	152	184	204
Operating profit (loss)	(4,549)	(3,271)	(8,639)	(7,255)
Total assets	$ 46,820	$ 51,925	$ 46,820	$ 51,925	$ 66,785

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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