|
Note 12 - Fair Value Measurements (Details) (USD $)
|
Sep. 30, 2013
|
Jun. 30, 2013
|
|---|---|---|
| Note 12 - Fair Value Measurements (Details) [Line Items] | ||
| Restricted Cash and Investments, Noncurrent | $ 14,900,000 | $ 15,400,000 |
| Available-for-sale Securities | 13,431,000 | 15,529,000 |
|
Municipal Bonds [Member]
|
||
| Note 12 - Fair Value Measurements (Details) [Line Items] | ||
| Available-for-sale Securities | 12,200,000 | 14,000,000 |
|
Corporate Bond Securities [Member]
|
||
| Note 12 - Fair Value Measurements (Details) [Line Items] | ||
| Available-for-sale Securities | $ 1,200,000 | $ 1,500,000 |