Note 10 - Benefit Plans - U.S and German Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 02, 2016	Dec. 27, 2014
Cash and equivalents	$ 1,428	$ 2,061
Total pension plan assets	42,208	44,629	$ 141,584
Fair Value, Inputs, Level 2 [Member]
Cash and equivalents	952
Total pension plan assets	33,570	32,917
Fair Value, Inputs, Level 1 [Member]
Cash and equivalents	476	2,061
Total pension plan assets	8,638	11,712
Equity Securities [Member] | Global Equity Index Fund [Member]
Investments	6,321	12,801
Equity Securities [Member] | Global Equity Index Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Investments	6,321	12,801
Equity Securities [Member] | Philippine Stock [Member]
Investments	906	836
Equity Securities [Member] | Philippine Stock [Member] | Fair Value, Inputs, Level 1 [Member]
Investments	906	836
Equity Securities [Member] | Global Equity GBP Hedge Fund [Member]
Investments	6,406
Equity Securities [Member] | Global Equity GBP Hedge Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Investments	6,406
Fixed Income Investments [Member] | Investment Grade Corporate Bond Funds [Member]
Investments	5,372	6,807
Fixed Income Investments [Member] | Investment Grade Corporate Bond Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Investments	5,372	6,807
Fixed Income Investments [Member] | Over 15y Gilts Index Fund [Member]
Investments	3,265	3,428
Fixed Income Investments [Member] | Over 15y Gilts Index Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Investments	3,265	3,428
Fixed Income Investments [Member] | Active Corp Bond Over 10 Yr Fund [Member]
Investments	5,902	6,440
Fixed Income Investments [Member] | Active Corp Bond Over 10 Yr Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Investments	5,902	6,440
Fixed Income Investments [Member] | Over 5y Index Linked Gilts Fund [Member]
Investments	10,724	10,248
Fixed Income Investments [Member] | Over 5y Index Linked Gilts Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Investments	10,724	10,248
Fixed Income Investments [Member] | Philippine Long Govt Securities [Member]
Investments	1,133	1,227
Fixed Income Investments [Member] | Philippine Long Govt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investments	1,133	1,227
Fixed Income Investments [Member] | Philippine Long Corporate Bonds [Member]
Investments	751	781
Fixed Income Investments [Member] | Philippine Long Corporate Bonds [Member] | Fair Value, Inputs, Level 1 [Member]
Investments	$ 751	$ 781