Note 10 - Fair Value Measurements (Details) - Financial Instruments, Assets and Liabilities Measured at Fair Value (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Asset Category
Money market accounts	$ 56,767	$ 78,633
Available for sale equity securities	2,315	2,302
Derivatives		163
Total	59,082	81,098
Liability Category
Long term contingent consideration	58,600	34,800
Fair Value, Inputs, Level 1 [Member]
Asset Category
Money market accounts	56,767	78,633
Available for sale equity securities	1,507	1,470
Total	58,274	80,103
Fair Value, Inputs, Level 2 [Member]
Asset Category
Available for sale equity securities	808	832
Derivatives		163
Total	808	995
Fair Value, Inputs, Level 3 [Member]
Liability Category
Long term contingent consideration	$ 58,600	$ 34,800