Employee Retirement Plans Summary of the Plans' Net Periodic Pension Cost, Benefit Obligations, Funded Status, and Net Balance Sheet Position (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 31, 2010
Elgin Plan [Member]
Net Periodic Pension Cost:
Service cost	$ 0	$ 0
Interest cost	183	175
Expected return on assets	(215)	(209)
Amortization of net loss (gain)	64	154
Amortization of net loss (gain)	0	0
Net periodic benefit cost	32	120
Change in Benefit Obligation:
Benefit obligation – beginning of year	4,134		4,862
Service cost	0	0
Interest cost	183	175
Actuarial loss	654	(675)
Pension settlement	0	0
Net benefit payments	(222)	(228)
Benefit obligation – end of year	4,749	4,134	4,862
Change in Plan Assets:
Plan assets at fair value – beginning of year	3,722		3,503
Company contributions	0	128
Investment gain	51	319
Benefit payments and plan expenses	(222)	(228)
Plan assets at fair value – end of year	3,551	3,722	3,503
Funded Status:
Unfunded benefit obligation	(1,198)	(412)
Amounts recognized in balance sheet at year end:
Other non-current liabilities	(1,198)	(412)
Pre-tax components in accumulated other comprehensive income:
Net actuarial loss (gain)	1,673	918
Net prior service cost	0	0
Net transaction (asset) obligations	0	0
Total amount recognized	1,673	918
Accumulated Benefit Obligation	4,749	4,134
Assumed discount rate	3.80%	4.70%
Expected return on assets	6.00%	6.00%
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	0	0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	0	0
Smithville Plan [Member]
Net Periodic Pension Cost:
Service cost	0	0
Interest cost	690	643
Expected return on assets	(584)	(529)
Amortization of net loss (gain)	303	519
Amortization of net loss (gain)	0	0
Net periodic benefit cost	409	633
Change in Benefit Obligation:
Benefit obligation – beginning of year	14,799		16,070
Service cost	0	0
Interest cost	690	643
Actuarial loss	3,780	(1,282)
Pension settlement	0	0
Net benefit payments	(648)	(632)
Benefit obligation – end of year	18,621	14,799	16,070
Change in Plan Assets:
Plan assets at fair value – beginning of year	9,602		8,781
Company contributions	913	649
Investment gain	157	804
Benefit payments and plan expenses	(648)	(632)
Plan assets at fair value – end of year	10,024	9,602	8,781
Funded Status:
Unfunded benefit obligation	(8,597)	(5,197)
Amounts recognized in balance sheet at year end:
Other non-current liabilities	(8,597)	(5,197)
Pre-tax components in accumulated other comprehensive income:
Net actuarial loss (gain)	8,029	4,125
Net prior service cost	0	0
Net transaction (asset) obligations	0	0
Total amount recognized	8,029	4,125
Accumulated Benefit Obligation	18,621	14,799
Assumed discount rate	3.80%	4.70%
Expected return on assets	6.00%	6.00%
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	0	0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	0	0
Wrexham Plan [Member]
Net Periodic Pension Cost:
Service cost	0	0
Interest cost	639	635
Expected return on assets	(996)	(819)
Amortization of net loss (gain)	0	0
Amortization of net loss (gain)	0	0
Net periodic benefit cost	(357)	(184)
Change in Benefit Obligation:
Benefit obligation – beginning of year	15,745		15,462
Service cost	0	0
Interest cost	639	635
Actuarial loss	1,273	(7)
Pension settlement	0	0
Net benefit payments	(634)	(716)
Benefit obligation – end of year	16,114	15,745	15,462
Change in Plan Assets:
Plan assets at fair value – beginning of year	15,172		12,997
Company contributions	511	526
Investment gain	1,133	2,054
Benefit payments and plan expenses	(634)	(716)
Plan assets at fair value – end of year	15,306	15,172	12,997
Funded Status:
Unfunded benefit obligation	(808)	(573)
Amounts recognized in balance sheet at year end:
Other non-current liabilities	(808)	(573)
Pre-tax components in accumulated other comprehensive income:
Net actuarial loss (gain)	2,188	1,116
Net prior service cost	0	0
Net transaction (asset) obligations	0	0
Total amount recognized	2,188	1,116
Accumulated Benefit Obligation	16,114	15,745
Assumed discount rate	3.60%	4.40%
Expected return on assets	6.30%	7.00%
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	(909)	371
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	(876)	311
Directors Plans [Member]
Net Periodic Pension Cost:
Service cost	447	929
Interest cost	416	360
Expected return on assets	0	0
Amortization of net loss (gain)	(413)	(145)
Amortization of net loss (gain)	0	0
Net periodic benefit cost	450	1,144
Change in Benefit Obligation:
Benefit obligation – beginning of year	8,815		8,993
Service cost	447	929
Interest cost	416	360
Actuarial loss	859	(1,467)
Pension settlement	0	0
Net benefit payments	0	0
Benefit obligation – end of year	10,537	8,815	8,993
Change in Plan Assets:
Plan assets at fair value – beginning of year	0		0
Company contributions	0	0
Investment gain	0	0
Benefit payments and plan expenses	0	0
Plan assets at fair value – end of year	0	0	0
Funded Status:
Unfunded benefit obligation	(10,537)	(8,815)
Amounts recognized in balance sheet at year end:
Other non-current liabilities	(10,537)	(8,815)
Pre-tax components in accumulated other comprehensive income:
Net actuarial loss (gain)	(1,672)	(2,944)
Net prior service cost	0	0
Net transaction (asset) obligations	0	0
Total amount recognized	(1,672)	(2,944)
Accumulated Benefit Obligation	7,197	5,473
Salary growth rate	10.00%	10.00%
Assumed discount rate	3.80%	4.70%
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	0	0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	$ 0	$ 0