Note 5 - Fair Values of Financial Instruments (Details)	Jun. 30, 2013
Note 5 - Fair Values of Financial Instruments (Details) [Line Items]
Fair Value Hierarchy, Number of Input Levels	3
Transferred from Level 3 to Level 2 [Member]
Note 5 - Fair Values of Financial Instruments (Details) [Line Items]
Number of Investments Transferred Between Levels	4
Private Equity Investment [Member]
Note 5 - Fair Values of Financial Instruments (Details) [Line Items]
Number of Level 3 Investments Reported at Fair Value	1
Debt Securities [Member]
Note 5 - Fair Values of Financial Instruments (Details) [Line Items]
Number of Level 3 Investments Reported at Fair Value	2