Consolidated Statements Of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2016	Mar. 29, 2015
Income Statement [Abstract]
Net revenues	$ 119,314	$ 128,542
Cost of revenues	74,986	72,005
Gross profit	44,328	56,537
Selling, general, and administrative expenses	49,519	51,306
Research and development	5,023	4,543
Restructuring expense	432	1,304
Merger transaction costs	6,017	0
Litigation matters	8,100	0
Acquisition costs	0	79
Other operating income	0	(361)
Operating loss	(24,763)	(334)
Interest income	165	227
Interest expense	1,151	938
Other gain (loss), net	56	371
Loss before income taxes	(25,693)	(674)
Income tax expense	6,828	1,885
Net loss	$ (32,521)	$ (2,559)
Net loss per common share:
Basic (loss) earnings per share (USD per share)	$ (0.77)	$ (0.06)
Diluted (loss) earnings per share (USD per share)	(0.77)	(0.06)
Dividends declared per share (USD per share)	$ 0	$ 0.50