Note G - Accumulated Other Comprehensive Income (Details) - Accumulated Other Comprehensive Income (Loss) (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax	$ 3,406	$ 898
Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax	3,946		3,918
Before Reclassification [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax	$ 38