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Note 7 - Fair Value Measurements - Carrying Amounts and Fair Values (Details) $ in Thousands	Jun. 30, 2015 USD ($)
Money Market Funds [Member]
Assets:
Assets	$ 96,015
Assets	96,015
Notes [Member]
Long-term debt, including current portion
Long-term Debt	450,000
Long-term debt, including current portion	457,875
Term Loan [Member]
Long-term debt, including current portion
Long-term Debt	100,000
Long-term debt, including current portion	100,000
Long-term Debt	$ 550,000

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value of financial and nonfinancial obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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