|
Note 4 - Gulf Of Mexico Oil Spill Disaster (Details) (USD $)
|
1 Months Ended | 4 Months Ended | 8 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|---|---|
|
Apr. 30, 2011
|
Oct. 30, 2010
|
Sep. 30, 2010
|
Dec. 31, 2010
|
Apr. 30, 2011
|
Dec. 31, 2011
|
Dec. 31, 2011
Oil Spill [Member]
|
Dec. 31, 2010
Oil Spill [Member]
|
|
| Note 4 - Gulf Of Mexico Oil Spill Disaster (Details) [Line Items] | ||||||||
| Proceeds from Legal Settlements | $ 11,400,000 | $ 7,300,000 | $ 18,700,000 | $ 44,800,000 | ||||
| Costs Of Goods And Services Sold, Percentage | 4.40% | 4.40% | 8.90% | |||||
| Reduction in Cost of Sales | 8,200,000 | 10,500,000 | ||||||
| Loss from Catastrophes | $ (26,200,000) | |||||||