Net Income (Loss) Per Share Earnings per Share Table (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the calculation of basic and diluted net income per share:

	Year ended
	December 31, 2017			January 1, 2017			January 3, 2016
Basic net income per share:
Net income	$	7,159		$	45,472		$	4
Less: Income attributable to non-vested shares	(118		)	(616		)	—
Less: Income attributable to preferred stock	(1,479		)	(9,461		)	(1		)
Net income available to common stockholders	$	5,562		$	35,395		$	3
Weighted average common shares outstanding	35,416,531			35,178,329			34,958,847
Basic net income per share	$	0.16		$	1.01		$	0.00
Diluted net income per share:
Net income	$	7,159		$	45,472		$	4
Shares used in computing basic net income per share	35,416,531			35,178,329			34,958,847
Dilutive effect of preferred stock and non-vested shares	9,559,983			9,673,016			9,664,404
Shares used in computing diluted net income per share	44,976,514			44,851,345			44,623,251
Diluted net income per share (1)	$	0.16		$	1.01		$	0.00

(1) Diluted net income per share is equal to basic net income per share for the periods presented due to the allocation of earnings to participating securities under the two-class method of calculating basic net income per share causing basic net income per share to be lower than diluted net income per share calculated under the treasury-stock method.