Note 12 - Financial Information by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
UNITED STATES
Revenue
Revenues			$ 384,147	$ 748,845	$ 717,263
Long-Lived Assets
Long-Lived Assets	$ 275,109	$ 294,762	275,109	294,762	247,947
CANADA
Revenue
Revenues			52,851	79,516	47,559
Long-Lived Assets
Long-Lived Assets	552	10,044	552	10,044	10,862
EMEA [Member]
Revenue
Revenues			174,524	177,244	141,535
Long-Lived Assets
Long-Lived Assets	50,759	55,560	50,759	55,560	44,262
Latin America [Member]
Revenue
Revenues			47,240	85,244	99,587
Long-Lived Assets
Long-Lived Assets	4,543	6,635	4,543	6,635	9,852
Asia Pacific [Member]
Revenue
Revenues			18,103	27,567	36,412
Long-Lived Assets
Long-Lived Assets	9,731	25,991	9,731	25,991	27,241
Revenues	150,587	306,162	676,865	1,118,416	1,042,356
Long-Lived Assets	$ 340,694	$ 392,992	$ 340,694	$ 392,992	$ 340,164