Share-based Compensation (Options) (Details) - Options - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 28, 2016	Jun. 30, 2015
Shares
Outstanding at the beginning of the period (in shares)	328,498
Cancelled/Expired (in shares)	(1,622)
Exercised (in shares)	(152,577)
Outstanding at the end of the period (in shares)	174,299
Exercisable at the end of period (in shares)	174,299
Stock options vested (in shares)	0	0
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 13.10
Cancelled/Expired (in dollars per share)	14.80
Exercised (in dollars per share)	12.23
Outstanding at the end of the period (in dollars per share)	13.85
Exercisable at the end of the period (in dollars per share)	$ 13.85
Weighted-Average Remaining Contractual Term
Outstanding at the end of the period	10 months 24 days
Exercisable at the end of the period	10 months 24 days
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)	$ 5,398
Exercisable at the end of the period (in dollars)	5,398
Intrinsic value of options exercised (in dollars)	4,600	$ 3,600
Cash received before tax withholdings from options exercised	1,900	2,700
Excess tax benefit realized from tax deductions associated with options exercised	$ 1,300	$ 1,000