Note 8 - Employee Benefit Plans (Details) - Amounts Recognized in the Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current liabilities:
Accrued benefit liability	$ (402)	$ (385)
Non- current pension liability:
Accrued benefit liability	(46,513)	(43,348)
Accumulated other comprehensive loss	42,103	41,041
Net amount recognized	$ (4,812)	$ (2,692)