Note 8 - Geographic Information - Revenues by Geographic Area (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues:
Revenues	$ 216,104	$ 216,736
UNITED STATES
Revenues:
Revenues	95,480	91,122
UNITED KINGDOM
Revenues:
Revenues	17,340	16,242
Not Connected to a Country [Member]
Revenues:
Revenues	96,543	101,576
Other Countries [Member]
Revenues:
Revenues	$ 6,741	$ 7,796