Per Share Amounts and Common Shares Outstanding (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Schedule of earnings per share, basic and diluted [Table Text Block]

The per share amounts were computed as follows:

	Three Months Ended
	March 31, 2018			April 1, 2017
Income available to common shareholders:
Net loss	$	(6,627	)	$	(3,887	)
Weighted-average shares:
Basic:
Outstanding	25,229			24,967
Partially-paid share subscriptions	189			208
Basic weighted-average shares	25,418			25,175
Diluted:
Basic from above	25,418			25,175
Incremental shares from assumed:
Exercise of stock subscription purchase rights	146			145
Exercise of stock options and awards	912			896
Diluted weighted-average shares	26,476			26,216
Net loss per share--basic and diluted	$	(.26	)	$	(.15	)

Schedule of common shares outstanding [Table Text Block]

A summary of the activity of the common and redeemable shares outstanding for the three months endedMarch 31, 2018 follows:

	Common Shares		Redeemable
	Net of Treasury Shares		Shares		Total
Shares outstanding at January 1, 2018	17,753,832		6,467,027		24,220,859
Shares purchased	(261,959	)	(39,105	)	(301,064	)
Shares sold	—		217,325		217,325
Stock subscription offering -- cash purchases	12,670		—		12,670
Options and awards exercised	12,649		—		12,649
Shares outstanding at March 31, 2018	17,517,192		6,645,247		24,162,439