Note 6 - Investment in Unconsolidated Affiliate (Details) (USD $)	3 Months Ended																12 Months Ended			1 Months Ended		3 Months Ended
	Dec. 27, 2014		Sep. 27, 2014		Jun. 28, 2014		Mar. 29, 2014		Dec. 28, 2013		Sep. 28, 2013		Jun. 29, 2013		Mar. 30, 2013		Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012	Nov. 30, 2012	Apr. 30, 2012	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012
Note 6 - Investment in Unconsolidated Affiliate (Details) [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	7.20%								7.20%								7.20%	7.20%
Operating Income (Loss)	$ 26,391,000	[1]	$ 40,130,000	[2]	$ 33,719,000	[3]	$ 33,590,000	[4]	$ 32,823,000	[5]	$ 37,559,000	[6]	$ 31,382,000	[7]	$ 28,117,000	[7],[8]	$ 133,830,000	$ 129,881,000	$ 106,870,000
Income Tax Expense (Benefit)																	32,228,000	35,451,000	24,720,000
Loans Receivable [Member] | Shocking [Member]
Note 6 - Investment in Unconsolidated Affiliate (Details) [Line Items]
Other than Temporary Impairment Losses, Investments															2,000,000
Shocking [Member] | Equity Method Investments [Member]
Note 6 - Investment in Unconsolidated Affiliate (Details) [Line Items]
Operating Income (Loss)																			(4,000,000)
Other than Temporary Impairment Losses, Investments															8,700,000
Shocking [Member]
Note 6 - Investment in Unconsolidated Affiliate (Details) [Line Items]
Investments in and Advances to Affiliates, at Fair Value, Gross Additions																					10,000,000
Investments in and Advances to Affiliates, at Fair Value																					16,000,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners																					18.40%
Increase (Decrease) in Notes Receivables																				2,000,000
Other than Temporary Impairment Losses, Investments															10,700,000				3,300,000
Investments															0
Income Taxes Paid, Net									6,100,000
Income Tax Expense (Benefit)									2,800,000						3,300,000
Equity Method Investments [Member]
Note 6 - Investment in Unconsolidated Affiliate (Details) [Line Items]
Operating Income (Loss)																			(7,334,000)			(3,811,000)	(1,965,000)	(1,033,000)	(525,000)
Other than Temporary Impairment Losses, Investments																			$ 3,323,000			$ 3,323,000

[1] In the fourth quarter of 2014, the company recorded $2.2 million in charges related to severance and to the company's reorganization of its internal legal structure toenable the up-streaming of cash to the U.S. The company also recorded $0.3 million in acquisition costs and $0.3 million in impairment costs.

[2] In the third quarter of 2014, the company recorded $1.1 million in charges related to the company's reorganization of its internal legal structure, as noted above.

[3] In the second quarter of 2014, the company recorded a $1.4 million non-cash charge related to the step-up of inventory from the SymCom acquisition (See Note 2), $2.0 million in severance charges and $0.2 million in acquisition costs.

[4] In the first quarter of 2014, the company recorded a $1.4 million non-cash charge related to the step-up of inventory from the SymCom acquisition (See Note 2).

[5] 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.

[6] 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). Thecompany also recorded $0.3 million in acquisition charges related to the Hamlin acquisition.

[7] In the second quarter of 2013, the company recorded a $1.7 million non-cash charge related to the 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.

[8] 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 netincome for a $3.3 million charge to income tax expense related to the company's investment in Shocking Technologies (See Note 6).