Earnings Per Share - Schedule of Computation of Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Weighted average shares:
Weighted average common shares outstanding	33,741	33,589	33,725	33,556
Effect of dilutive securities outstanding	467		519
Diluted weighted average shares outstanding	34,208	33,589	34,244	33,556
Earnings (loss):
Income (loss) from continuing operations	$ 6,361	$ (10,253)	$ 11,441	$ (7,266)
Income (loss) from discontinued operations	0	(1,082)	0	(501)
Net income	$ 6,361	$ (11,335)	$ 11,441	$ (7,767)
Basic per share amounts:
Income from continuing operations	$ 0.19	$ (0.31)	$ 0.34	$ (0.22)
Income from discontinued operations	$ 0.00	$ (0.03)	$ 0.00	$ (0.01)
Net income per share basic	$ 0.19	$ (0.34)	$ 0.34	$ (0.23)
Diluted per share amounts:
Income from continuing operations	$ 0.19	$ (0.31)	$ 0.33	$ (0.22)
Income from discontinued operations	$ 0.00	$ (0.03)	$ 0.00	$ (0.01)
Net income per share diluted	$ 0.19	$ (0.34)	$ 0.33	$ (0.23)