Operating Segment and Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended							4 Months Ended	12 Months Ended
	Dec. 30, 2017	Oct. 07, 2017	Mar. 25, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 09, 2016	Mar. 19, 2016	Jul. 15, 2017	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Segment Reporting Information [Line Items]
Net revenue									$ 177,333	$ 171,662	$ 159,463
Operating income	$ 5,144	$ 4,128	$ 1,996	$ 3,771	$ 5,329	$ 3,005	$ 2,478	$ 3,332	14,600	14,583	12,818
Interest expense									804	834	470
Provision for taxes									1,456	4,049	4,068
Net income	7,459	$ 3,118	$ 1,388	3,463	$ 4,243	$ 2,090	$ 1,697	$ 2,096	14,061	11,493	11,606
Identifiable assets	156,105			150,761					156,105	150,761	143,737
Investments	20,278			19,030					20,278	19,030	19,644
Depreciation & amortization									3,910	5,244	5,218
Capital expenditures									2,745	2,653	5,067
Sporting Goods [Member]
Segment Reporting Information [Line Items]
Net revenue									177,333	171,662	159,463
Operating income									15,600	15,731	15,450
Interest expense (income)									975	802	(50)
Provision for taxes									6,134	6,173	6,356
Net income									8,626	8,774	9,151
Identifiable assets	130,388			125,780					130,388	125,780	116,013
Depreciation & amortization									3,910	5,244	5,218
Capital expenditures									2,745	2,653	5,067
All Other [Member]
Segment Reporting Information [Line Items]
Net revenue									0	0	0
Operating income									(1,000)	(1,148)	(2,632)
Interest expense									(171)	32	520
Provision for taxes									(4,678)	(2,124)	(2,288)
Net income									5,435	2,719	2,455
Identifiable assets	25,717			24,981					25,717	24,981	27,724
Investments	$ 20,278			$ 19,030					20,278	19,030	19,644
Depreciation & amortization									0	0	0
Capital expenditures									$ 0	$ 0	$ 0