Retirement Plans (Details) (USD $)	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011	Sep. 29, 2007
Retirement Plans
Retirement costs	$ 3,530,000	$ 3,085,000	$ 3,286,000
Accrued liability of PSSP	1,500,000	1,200,000
Percentage of employee's compensation which eligible employees can contribute towards the plan	100.00%
Percentage of employer's contribution under 401(k)/PSPP matching the first 2 percent of employee's compensation	100.00%
Percentage of the first portion of employee's compensation eligible for employer's matching contribution	2.00%
Percentage of employer's contribution under 401(k)/PSPP matching the next 4 percent of employee's compensation	25.00%
Percentage of the second portion of employee's compensation eligible for employer's matching contribution	4.00%
Period over which no shares were allocated to the participants of the plan	3 years
Number of shares that ESOP held on behalf of the participants	293,781
Dover plan
Retirement Plans
After-tax reduction of prior service costs				500,000
Other changes in plan assets and obligations recognized in other comprehensive income (loss):
Accumulated other comprehensive loss at beginning of year	(949,000)	(854,000)
Net gain/(loss) incurred in year, net of tax	44,000	(169,000)
Amortization of actuarial net losses, net of tax	87,000	74,000
Accumulated other comprehensive loss at end of year	(818,000)	(949,000)	(854,000)
Change in projected benefit obligation:
Benefit obligation at beginning of year	3,183,000	3,001,000
Administrative cost	7,000	7,000	7,000
Interest cost	100,000	116,000	128,000
Actuarial (gain)/loss	(155,000)	264,000
Benefits paid	(298,000)	(205,000)
Benefit obligation at end of year	2,837,000	3,183,000	3,001,000
Change in plan assets:
Fair value of plan assets at beginning of year	2,323,000	2,266,000
Actual return on plan assets	34,000	120,000
Employer contributions	63,000	142,000
Benefits paid	(298,000)	(205,000)
Fair value of plan assets at end of year	2,122,000	2,323,000	2,266,000
Funded status at end of year	(715,000)	(860,000)
Components of net periodic benefit cost:
Administrative cost	7,000	7,000	7,000
Interest cost	100,000	116,000	128,000
Expected return on plan assets	(132,000)	(129,000)	(138,000)
Amortization of unrecognized net loss	138,000	116,000	91,000
Net periodic benefit cost	113,000	110,000	88,000
Projected benefit obligation
Discount rate (as a percent)	4.00%	3.25%	4.00%
Rate of compensation increase	0.00%	0.00%	0.00%
Expected return on plan assets (as a percent)	6.00%	6.00%	6.00%
Net periodic benefit cost
Discount rate (as a percent)	3.25%	4.00%	4.50%
Rate of compensation increase	0.00%	0.00%	0.00%
Expected return on plan assets (as a percent)	6.00%	6.00%	6.00%
Expected cash contributions to pension plan by the company	$ 118,000
Percentage of assets allocated to guaranteed insurance contracts	100.00%