Note 2 - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Balance at December 31, 2015	$ (33,716)
Balance at December 31, 2015	7,713
Balance at December 31, 2015	(26,003)
Before-tax amount	818
Before-tax amount	(107)
Before-tax amount	711
Tax (expense) benefit	484
Tax (expense) benefit	42
Tax (expense) benefit	526
Total activity in 2016	1,302
Total activity in 2016	(65)
Total activity in 2016	1,237	$ (5,877)
Balance at March 31, 2016	(32,414)
Balance at March 31, 2016	7,648
Balance at March 31, 2016	$ (24,766)