Equity-Based Compensation - Additional Information (Detail) (USD $)	1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Feb. 11, 2013	Jul. 02, 2012	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2010	Feb. 08, 2012 Enumerated	Feb. 03, 2011 Enumerated	Feb. 02, 2010 Enumerated	Jul. 02, 2007 Enumerated
Equity Based Compensation Textual [Abstract]
Number of Equity Based Compensation Plan			4		4
Aggregate market-based restricted stock unit												25,000
Target based Vesting of market-based restricted stock unit												0
Stock Options [Member]
Equity Based Compensation Textual [Abstract]
Vesting period					4 years
Stock option contractual term					10 years
Exercised, Aggregate Intrinsic Value					$ 435,000	$ 320,000
Stock Options [Member] | Maximum [Member]
Equity Based Compensation Textual [Abstract]
Stock options exercisable cumulative annual installments period					10 years
Stock Options [Member] | Minimum [Member]
Equity Based Compensation Textual [Abstract]
Stock option exercises, commencement period from date of grant					P1Y
Stock Option [Member]
Equity Based Compensation Textual [Abstract]
Weighted average remaining contractual life of options outstanding					1 year 9 months 18 days	1 year 7 months 6 days
Weighted average remaining contractual life of options exercisable					1 year 9 months 18 days	1 year 7 months 6 days
Aggregate intrinsic values of options outstanding			470,000	167,000	470,000	167,000
Unvested stock options			0		0
Service Based Restricted Stock Units [Member]
Equity Based Compensation Textual [Abstract]
Vesting period					3 years
Number of shares issuable, against each unit of RSU					1
Compensation expense			444,000	553,000	1,961,000	1,802,000
Unrecognized compensation cost			2,111,000		2,111,000
Weighted average period					1 year 1 month 6 days
Performance Based Restricted Stock Units [Member]
Equity Based Compensation Textual [Abstract]
Compensation expense			116,000	229,000	690,000	688,000
Unrecognized compensation cost			1,244,000		1,244,000
Weighted average period					1 year 6 months
Restricted Stock Units, awarded and vested										0	49,320
Target based Vesting of performance-based restricted stock unit										53,200	78,000
Performance-based restricted stock unit awards year of award granted										2013	2012
Performance Based Restricted Stock Units [Member] | Dependent upon achievement of sales growth targets [Member]
Equity Based Compensation Textual [Abstract]
Target based Vesting of performance-based restricted stock unit	77,700								45,850
Performance-based restricted stock unit awards year of award granted	2016								2014
Performance Based Restricted Stock Units [Member] | Dependent upon achievement of free cash flow targets [Member]
Equity Based Compensation Textual [Abstract]
Target based Vesting of performance-based restricted stock unit	66,600								39,300
Performance-based restricted stock unit awards year of award granted	2016								2014
Performance Based Restricted Stock Units [Member] | Maximum [Member]
Equity Based Compensation Textual [Abstract]
Vesting performance-based restricted stock unit										200.00%	200.00%
Performance Based Restricted Stock Units [Member] | Maximum [Member] | Dependent upon achievement of sales growth targets [Member]
Equity Based Compensation Textual [Abstract]
Vesting performance-based restricted stock unit	200.00%								200.00%
Performance Based Restricted Stock Units [Member] | Maximum [Member] | Dependent upon achievement of free cash flow targets [Member]
Equity Based Compensation Textual [Abstract]
Vesting performance-based restricted stock unit	200.00%								200.00%
Performance Based Restricted Stock Units [Member] | Minimum [Member]
Equity Based Compensation Textual [Abstract]
Vesting performance-based restricted stock unit										0.00%	0.00%
Performance Based Restricted Stock Units [Member] | Minimum [Member] | Dependent upon achievement of sales growth targets [Member]
Equity Based Compensation Textual [Abstract]
Vesting performance-based restricted stock unit	0.00%								0.00%
Performance Based Restricted Stock Units [Member] | Minimum [Member] | Dependent upon achievement of free cash flow targets [Member]
Equity Based Compensation Textual [Abstract]
Vesting performance-based restricted stock unit	0.00%								0.00%
Market Based Restricted Stock Units [Member]
Equity Based Compensation Textual [Abstract]
Vesting period					3 years
Compensation expense			100,000	228,000	490,000	691,000
Unrecognized compensation cost			$ 1,003,000		$ 1,003,000
Weighted average period					1 year 6 months
Restricted Stock Units, awarded and vested											67,130
Performance-based restricted stock unit awards year of award granted									2014	2013	2012	2011
Target based Vesting of market-based restricted stock unit									45,850	79,800	117,000
Number of enumerated peer group companies									28	28	28	32
Earned and awarded performance and market-based restricted stock unit	80,940	8,334					0	12,500
Market Based Restricted Stock Units [Member] | Certain Executives and Key Employees [Member]
Equity Based Compensation Textual [Abstract]
Performance-based restricted stock unit awards year of award granted	2016
Target based Vesting of market-based restricted stock unit	77,700
Number of enumerated peer group companies	20
Market Based Restricted Stock Units [Member] | Executive Officer [Member]
Equity Based Compensation Textual [Abstract]
Performance-based restricted stock unit awards year of award granted	2016
Target based Vesting of market-based restricted stock unit	32,500
Number of enumerated peer group companies	20
Market Based Restricted Stock Units [Member] | Maximum [Member]
Equity Based Compensation Textual [Abstract]
Vesting market-based restricted stock unit									200.00%	200.00%	200.00%	150.00%
Market Based Restricted Stock Units [Member] | Maximum [Member] | Certain Executives and Key Employees [Member]
Equity Based Compensation Textual [Abstract]
Vesting market-based restricted stock unit	200.00%
Market Based Restricted Stock Units [Member] | Maximum [Member] | Executive Officer [Member]
Equity Based Compensation Textual [Abstract]
Vesting market-based restricted stock unit	200.00%
Market Based Restricted Stock Units [Member] | Minimum [Member]
Equity Based Compensation Textual [Abstract]
Vesting market-based restricted stock unit									0.00%	0.00%	0.00%	0.00%
Market Based Restricted Stock Units [Member] | Minimum [Member] | Certain Executives and Key Employees [Member]
Equity Based Compensation Textual [Abstract]
Vesting market-based restricted stock unit	0.00%
Market Based Restricted Stock Units [Member] | Minimum [Member] | Executive Officer [Member]
Equity Based Compensation Textual [Abstract]
Vesting market-based restricted stock unit	0.00%