Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Sep. 30, 2018	Dec. 30, 2018
Basic (loss) earnings per common share:
Net income attributable to the Company	$ 8,354	$ (12,868)	$ (13,295)	$ 11,199	$ 6,623	$ 28,642	$ 15,342	$ 2,474
Preferred stock dividends and accretion	(3,486)				(5,556)
Net income attributable to participating securities				(72)		(147)
Net income attributable to common shareholders	$ 4,868	$ (12,868)	$ (13,295)	$ 11,127	$ 1,067	$ 28,495	$ 15,195	$ 2,474
Basic weighted average common shares outstanding	31,587,000			31,941,000	31,570,000	32,610,000
Basic earnings per common share	$ 0.15	$ (0.41)	$ (0.42)	$ 0.35	$ 0.03	$ 0.87	$ 0.47	$ 0.08
Diluted earnings per common share:
Net income attributable to common shareholders	$ 4,868	$ (12,868)	$ (13,295)	$ 11,127	$ 1,067	$ 28,495	$ 15,195	$ 2,474
Basic weighted average common shares outstanding	31,587,000			31,941,000	31,570,000	32,610,000
Dilutive effect of outstanding equity awards	186,000			234,000	176,000	250,000
Diluted weighted average common shares outstanding	31,773,000			32,175,000	31,746,000	32,860,000
Diluted earnings per common share	$ 0.15	$ (0.41)	$ (0.42)	$ 0.35	$ 0.03	$ 0.87	$ 0.47	$ 0.08
Weighted average antidilutive awards excluded from computation of earnings per share	1,561,000			1,257,000	1,469,000	1,143,000
Series B Convertible Preferred Stock, shares outstanding	252,530	0			252,530			0
Series B Preferred Stock
Diluted earnings per common share:
Weighted average antidilutive awards excluded from computation of earnings per share					5,000,000.0
Series B Convertible Preferred Stock, shares outstanding	252,530				252,530