Note 5 - Employee Retirement Benefit Plans: Schedule of Changes in Fair Value of Plan Assets (Details) - Pension Plan - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pension Plan, Fair Value of Plan Assets	$ 0	$ 29,721	$ 29,073
Equity Securities
Pension Plan, Fair Value of Plan Assets		18,227
Debt Securities
Pension Plan, Fair Value of Plan Assets		11,449
Money Market Funds
Pension Plan, Fair Value of Plan Assets		45
Fair Value, Inputs, Level 1
Pension Plan, Fair Value of Plan Assets		29,721
Fair Value, Inputs, Level 1 | Equity Securities
Pension Plan, Fair Value of Plan Assets		18,227
Fair Value, Inputs, Level 1 | Debt Securities
Pension Plan, Fair Value of Plan Assets		11,449
Fair Value, Inputs, Level 1 | Money Market Funds
Pension Plan, Fair Value of Plan Assets		45
Fair Value, Inputs, Level 2
Pension Plan, Fair Value of Plan Assets		0
Fair Value, Inputs, Level 2 | Equity Securities
Pension Plan, Fair Value of Plan Assets		0
Fair Value, Inputs, Level 2 | Debt Securities
Pension Plan, Fair Value of Plan Assets		0
Fair Value, Inputs, Level 2 | Money Market Funds
Pension Plan, Fair Value of Plan Assets		0
Fair Value, Inputs, Level 3
Pension Plan, Fair Value of Plan Assets		0
Fair Value, Inputs, Level 3 | Equity Securities
Pension Plan, Fair Value of Plan Assets		0
Fair Value, Inputs, Level 3 | Debt Securities
Pension Plan, Fair Value of Plan Assets		0
Fair Value, Inputs, Level 3 | Money Market Funds
Pension Plan, Fair Value of Plan Assets		$ 0