Note 6 - Investment in Unconsolidated Affiliate (Details) - Proportional Share of Shocking's Operating Losses for the Quarterly Periods in 2012 (USD $) In Thousands, 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. 31, 2013	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2012	Dec. 31, 2011
Note 6 - Investment in Unconsolidated Affiliate (Details) - Proportional Share of Shocking's Operating Losses for the Quarterly Periods in 2012 [Line Items]
Equity-method losses		[1],[2]		[1],[3]		[1],[4]		[1],[4],[5]	$ (2,188)	[1],[5],[6]	$ 1,220	[1],[6],[7]	$ 641	[1]	$ 326	[1],[7]
Total	(32,823)	[2]	(37,559)	[3]	(31,382)	[4]	(28,117)	[4],[5]	(18,019)	[5],[6]	(30,931)	[6],[7]	(32,096)		(25,824)	[1],[7]	(129,881)	(129,881)	(106,870)	(106,870)	(113,904)
Equity Method Investments [Member]
Note 6 - Investment in Unconsolidated Affiliate (Details) - Proportional Share of Shocking's Operating Losses for the Quarterly Periods in 2012 [Line Items]
Equity-method losses									488		1,965		1,033		525				4,011
Impairment charge									3,323										3,323
Total									$ 3,811		$ 1,965		$ 1,033		$ 525				$ 7,334

[1] In the first quarter of 2012, the company recorded a $0.2 million non-cash charge related to the step-up of inventory from the Selco acquisition (See Note 2).

[2] In the fourth quarter of 2013, the company recorded a $2.8 million charge to income tax expense related to the company's impairment of its investment in Shocking Technologies in the fourth quarter of 2012. (See Note 6). The company also recorded a $0.5 million non-cash credit related to the step-up of inventory from the Hamlin acquisition (See Note 2) and $0.2 million in acquisition expenses for the Hamlin acquisition.

[3] In the third quarter of 2013, the company recorded a $0.3 million non-cash charge related to the step-up of inventory from the Hamlin acquisition (See Note 2). The company also recorded $0.3 million in acquisition charges related to the Hamlin acquisition.

[4] In the second quarter of 2013, the company recorded a $1.7 million non-cash charge related to step-up of inventory from the Hamlin acquisition (See Note 2). The company also recorded $1.2 million in acquisition charges related to the Hamlin acquisition.

[5] In the first quarter of 2013, the company recorded a $10.7 million charge related to the impairment of Shocking Technologies. Additionally, the company restated net income for a $3.3 million charge to income tax expense related to the company's investment in Shocking Technologies (See Note 6).

[6] In the fourth quarter of 2012, the company recorded a $7.3 million charge related to the impairment and equity method losses of Shocking Technologies. (See Note 6). The company also recorded a $5.1 million charge related to a pension settlement (See Note 12).

[7] In the third quarter of 2012, the company recorded $0.5 million charge related to the impairment of the Dnsen, Germany property (See Note 11). The company also recorded $0.6 million in acquisition charges related to the Accel and Terra Power acquisitions and $0.4 million of non-cash charges related to the step-up of inventory from the Accel acquisition (See Note 2).