Note 2 - Summary of Significant Accounting Policies (Details) - Fair Values of the Company’s Financial Instruments (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Note 2 - Summary of Significant Accounting Policies (Details) - Fair Values of the Company’s Financial Instruments [Line Items]
Cash and cash equivalents	$ 131,466	$ 34,178
Available-for-sale securities	12,458
Foreign currency forward contracts	279	208
Total assets	144,203	34,386
Purchase consideration payable	20,860	14,728
Total liabilities	20,860	14,728
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Note 2 - Summary of Significant Accounting Policies (Details) - Fair Values of the Company’s Financial Instruments [Line Items]
Cash and cash equivalents	131,466	34,178
Total assets	131,466	34,178
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Note 2 - Summary of Significant Accounting Policies (Details) - Fair Values of the Company’s Financial Instruments [Line Items]
Foreign currency forward contracts	279	208
Total assets	279	208
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Note 2 - Summary of Significant Accounting Policies (Details) - Fair Values of the Company’s Financial Instruments [Line Items]
Available-for-sale securities	12,458
Total assets	12,458
Purchase consideration payable	20,860	14,728
Total liabilities	$ 20,860	$ 14,728