Note E - Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Amortization of Intangible Assets (in Dollars)	$ 10,437	$ 9,477	$ 14,089
Customer Relationships [Member] | Weighted Average [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years 292 days
Technology-Based Intangible Assets [Member] | Weighted Average [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years 109 days
Marketing-Related Intangible Assets [Member] | Weighted Average [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year 73 days
Minimum [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Maximum [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Weighted Average [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years 6 months