Consolidated Statement of Stockholders' Deficit Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In-Capital	Convertible Preferred Stock	Accumulated Other Comprehensive Loss	Accumulated Deficit	Treasury Stock
Beginning Balance (in shares) at Sep. 29, 2018		27,259,262		93,000			0
Beginning Balance at Sep. 29, 2018	$ (28,336)	$ 3	$ 70,023	$ 9,300	$ (38,427)	$ (69,235)	$ 0
Warrant exercises (in shares)		130,385
Warrant exercises	1,499		1,499
Restricted stock activity (in shares)		51,195
Restricted stock activity	(596)		(596)
Stock option activity (in shares)		2,567
Stock option activity	(26)		(26)
Share-based compensation expense	3,077		3,077
Tender offer share repurchases (in shares)		1,782,568		364			1,782,568
Tender offer share repurchases	(50,370)		(52)	$ (36)			$ (50,282)
Preferred stock conversion (in shares)		799,615		92,636
Preferred stock conversion	0		9,264	$ (9,264)
Net income	12,708					12,708
Other comprehensive income, net of tax	1,572				1,572
Ending Balance (in shares) at Jun. 29, 2019		26,460,456		0			1,782,568
Ending Balance at Jun. 29, 2019	(61,186)	$ 3	83,189	$ 0	(36,855)	(57,241)	$ (50,282)
Beginning Balance (in shares) at Mar. 30, 2019		26,440,663		0			1,782,568
Beginning Balance at Mar. 30, 2019	(77,590)	$ 3	81,889	$ 0	(37,379)	(71,842)	$ (50,261)
Warrant exercises (in shares)		17,750
Warrant exercises	204		204
Stock option activity (in shares)		2,043
Stock option activity	(20)		(20)
Share-based compensation expense	1,095		1,095
Tender offer share repurchases	0		21				$ (21)
Net income	14,601					14,601
Other comprehensive income, net of tax	524
Other comprehensive income, net of tax	524				524
Ending Balance (in shares) at Jun. 29, 2019		26,460,456		0			1,782,568
Ending Balance at Jun. 29, 2019	(61,186)	$ 3	83,189	$ 0	(36,855)	(57,241)	$ (50,282)
Beginning Balance (in shares) at Sep. 28, 2019		26,476,336		0			1,782,568
Beginning Balance at Sep. 28, 2019	(67,811)	$ 3	84,271	$ 0	(56,154)	(45,649)	$ (50,282)
Warrant exercises (in shares)		368,712
Warrant exercises	4,240		4,240
Restricted stock activity (in shares)		94,724
Restricted stock activity	(1,623)		(1,623)
Stock option activity (in shares)		108,632
Stock option activity	(1,945)		(1,945)
Share-based compensation expense	3,987		3,987
Net income	244					244
Other comprehensive income, net of tax	980				980
Ending Balance (in shares) at Jul. 04, 2020		27,048,404		0			1,782,568
Ending Balance at Jul. 04, 2020	(61,928)	$ 3	88,930	$ 0	(55,174)	(45,405)	$ (50,282)
Beginning Balance (in shares) at Apr. 04, 2020		27,027,272		0			1,782,568
Beginning Balance at Apr. 04, 2020	(65,063)	$ 3	87,408	$ 0	(55,501)	(46,691)	$ (50,282)
Restricted stock activity (in shares)		0
Restricted stock activity	(255)		(255)
Stock option activity (in shares)		21,132
Stock option activity	0		0
Share-based compensation expense	1,777		1,777
Net income	1,286					1,286
Other comprehensive income, net of tax	327				327
Ending Balance (in shares) at Jul. 04, 2020		27,048,404		0			1,782,568
Ending Balance at Jul. 04, 2020	$ (61,928)	$ 3	$ 88,930	$ 0	$ (55,174)	$ (45,405)	$ (50,282)