Consolidated Statements of Changes in Stockholder's Equity Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]
Beginning balance (in shares) at Dec. 30, 2018		35,742,427	100				0
Beginning balance at Dec. 30, 2018	$ 185,540	$ 357	$ 0	$ 150,459	$ 35,511	$ (646)	$ (141)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,526			1,526
Vesting of non-vested shares (in shares)		371,824
Net loss	0	$ 4		(4)
Net income (loss)	(11,469)
Ending balance (in shares) at Mar. 31, 2019		36,114,251	100				0
Ending balance at Mar. 31, 2019	183,101	$ 361	$ 0	151,981	31,546	(646)	$ (141)
Beginning balance (in shares) at Dec. 30, 2018		35,742,427	100				0
Beginning balance at Dec. 30, 2018	185,540	$ 357	$ 0	150,459	35,511	(646)	$ (141)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(22,013)
Ending balance (in shares) at Sep. 29, 2019		51,049,376	100				(283,069)
Ending balance at Sep. 29, 2019	318,871	$ 510	$ 0	300,013	21,002	(646)	$ (2,008)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASC 842, net of taxes | Accounting Standards Update 2016-02 [Member]	7,504				7,504
Beginning balance (in shares) at Mar. 31, 2019		36,114,251	100				0
Beginning balance at Mar. 31, 2019	183,101	$ 361	$ 0	151,981	31,546	(646)	$ (141)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,282			1,282
Vesting of non-vested shares (in shares)		2,478
Net loss	0	$ 0		0
Issuance of common and preferred stock (in shares)		7,364,413	10,000
Issuance of common and preferred stock	145,333	$ 74		145,259
Net income (loss)	(3,732)				(3,732)
Repurchase of treasury stock				(141)			$ 141
Ending balance (in shares) at Jun. 30, 2019		43,481,142	10,100				0
Ending balance at Jun. 30, 2019	325,984	$ 435	$ 0	298,381	27,814	(646)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,707			1,707
Vesting of non-vested shares (in shares)		117,832
Net loss	0	$ 0		0
Net income (loss)	$ (6,812)				(6,812)
Repurchase of treasury stock (in shares)	(283,069)
Repurchase of treasury stock	$ (2,008)						$ (2,008)
Stock Issued During Period, Value, Conversion of Convertible Securities	0	$ 75		(75)
Stock Issued During Period, Shares, Conversion of Convertible Securities		7,450,402	(10,000)
Ending balance (in shares) at Sep. 29, 2019		51,049,376	100				(283,069)
Ending balance at Sep. 29, 2019	$ 318,871	$ 510	$ 0	300,013	21,002	(646)	$ (2,008)
Beginning balance (in shares) at Dec. 29, 2019	50,496,265	51,049,377	100				(553,112)
Beginning balance at Dec. 29, 2019	$ 309,462	$ 510	$ 0	301,251	11,096	622	$ (4,017)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,132
Vesting of non-vested shares (in shares)		424,963
Net loss	0	$ 5		(5)
Net income (loss)	$ (22,209)
Repurchase of treasury stock (in shares)	(9,318)
Repurchase of treasury stock	$ (54)						$ (54)
Change in valuation of interest rate swap	(5,209)					(5,209)
Ending balance (in shares) at Mar. 29, 2020		51,474,340	100				(562,430)
Ending balance at Mar. 29, 2020	$ 283,122	$ 515	$ 0	302,378	(11,113)	(4,587)	$ (4,071)
Beginning balance (in shares) at Dec. 29, 2019	50,496,265	51,049,377	100				(553,112)
Beginning balance at Dec. 29, 2019	$ 309,462	$ 510	$ 0	301,251	11,096	622	$ (4,017)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (10,836)
Ending balance (in shares) at Sep. 27, 2020	50,923,686	51,486,116	100				(562,430)
Ending balance at Sep. 27, 2020	$ 294,898	$ 515	$ 0	304,790	260	(6,596)	$ (4,071)
Beginning balance (in shares) at Mar. 29, 2020		51,474,340	100				(562,430)
Beginning balance at Mar. 29, 2020	283,122	$ 515	$ 0	302,378	(11,113)	(4,587)	$ (4,071)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,109			1,109
Vesting of non-vested shares (in shares)		11,776
Net loss	0
Net income (loss)	7,842
Change in valuation of interest rate swap	(2,178)					(2,178)
Ending balance (in shares) at Jun. 28, 2020		51,486,116	100				(562,430)
Ending balance at Jun. 28, 2020	289,895	$ 515	$ 0	303,487	(3,271)	(6,765)	$ (4,071)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,303			1,303
Net income (loss)	3,531
Change in valuation of interest rate swap	$ 169					169
Ending balance (in shares) at Sep. 27, 2020	50,923,686	51,486,116	100				(562,430)
Ending balance at Sep. 27, 2020	$ 294,898	$ 515	$ 0	$ 304,790	$ 260	$ (6,596)	$ (4,071)