Summary of Significant Accounting Policies - Calculation of EPS and Reconciliation of Weighted Average Common Shares Used in Calculation of Basic and Diluted EPS (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Numerator:
Net income (loss)	$ 5,343	$ 6,289	$ 9,922	$ 5,264	$ 3,194	$ 2,722	$ 3,690	$ (652)	$ 26,819	$ 8,955	$ (16,898)
Denominator:
Weighted-average common shares - Basic									48,881	53,620	53,659
Add: Dilutive effect of stock compensation plans									3,330	1,642
Weighted-average common shares - Diluted									52,211	55,262	53,659
Net income (loss) per common share:
Basic	$ 0.11	$ 0.14	$ 0.20	$ 0.10	$ 0.06	$ 0.05	$ 0.07	$ (0.01)	$ 0.55	$ 0.17	$ (0.31)
Dilutive	$ 0.11	$ 0.13	$ 0.19	$ 0.09	$ 0.06	$ 0.05	$ 0.07	$ (0.01)	$ 0.51	$ 0.16	$ (0.31)