Note 7 - Restructuring Charges (Details) - Summary of Restructuring Reserves (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, balance	$ 543
Adjustments to previously recognized liabilities	(6)
Payments	(208)
Restructuring reserve, balance	329
Employee Separation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, balance	90
Payments	(87)
Restructuring reserve, balance	3
Contract Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, balance	453
Adjustments to previously recognized liabilities	(6)
Payments	(121)
Restructuring reserve, balance	$ 326