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Earnings per Common Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Earnings Per Share [Abstract]
Net income (loss)	$ 62,994	$ 16,085	$ (11,576)
Basic weighted shares outstanding (in shares)	9,045,000	8,913,000	8,750,000
Dilutive effect of share-based awards (in shares)	201,000	156,000	0
Diluted weighted average shares outstanding (in shares)	9,246,000	9,069,000	8,750,000
Basic earnings (loss) per share (in dollars per share)	$ 6.96	$ 1.80	$ (1.32)
Diluted earnings (loss) per share (in dollars per share)	$ 6.81	$ 1.77	$ (1.32)
Antidilutive securities excluded from computation of earnings per share (in shares)	80,000	289,333	512,720

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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