Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)
Adjustment for adoption of accounting standards, net of tax	$ 1,912				$ 1,912
Beginning Balance, Shares at Jan. 01, 2019		37,305,342
Beginning Balance at Jan. 01, 2019	422,274	$ 4	$ 336,941	$ 180	85,149
Net income (loss)	1,425				1,425
Other comprehensive income (loss), net of tax	(118)			(118)
Comprehensive income (loss)	1,307
Stock-based compensation	1,577		1,577
Issuance of vested restricted stock, net of shares withheld for tax withholding, shares		13,172
Issuance of vested restricted stock, net of shares withheld for tax withholding	(84)		(84)
Exercise of stock options, shares		1,500
Exercise of stock options	16		16
Repurchase of common stocks and warrants, shares		(270,874)
Repurchase of common stocks and warrants	(4,306)		(4,306)
Ending Balance, Shares at Mar. 26, 2019		37,049,140
Ending Balance at Mar. 26, 2019	422,696	$ 4	334,144	62	88,486
Beginning Balance, Shares at Dec. 31, 2019		37,059,202
Beginning Balance at Dec. 31, 2019	302,107	$ 4	333,379	(52)	(31,224)
Net income (loss)	(102,468)				(102,468)
Other comprehensive income (loss), net of tax	45			45
Comprehensive income (loss)	(102,423)
Stock-based compensation	1,225		1,225
Issuance of vested restricted stock, net of shares withheld for tax withholding, shares		21,758
Issuance of vested restricted stock, net of shares withheld for tax withholding	(105)		(105)
Ending Balance, Shares at Mar. 24, 2020		37,080,960
Ending Balance at Mar. 24, 2020	$ 200,804	$ 4	$ 334,499	$ (7)	$ (133,692)