Note 7 - Restructuring Charges (Details) - Summary of Restructuring Reserves (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, balance	$ 1,147	$ 1,675	$ 2,129
Liabilities Recognized	(5)	0	219
Payments	(341)	(528)	(673)
Restructuring reserve, balance	801	1,147	1,675
Employee Separation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, balance	264	382	604
Liabilities Recognized	0	0	0
Payments	(87)	(118)	(222)
Restructuring reserve, balance	177	264	382
Contract Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, balance	883	1,293	1,525
Liabilities Recognized	(5)	0	219
Payments	(254)	(410)	(451)
Restructuring reserve, balance	$ 624	$ 883	$ 1,293