Note 16 - Share-Based and Other Compensation Plans (Other Compensation Programs) (Details) (USD $)	12 Months Ended															1 Months Ended	12 Months Ended						1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended						1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009		Dec. 31, 2011 Cash Settled [Member]		Dec. 31, 2010 Cash Settled [Member]		Dec. 31, 2009 Cash Settled [Member]		Dec. 31, 2011 Officer LTI Plan Cash Based [Member]	Dec. 31, 2010 Officer LTI Plan Cash Based [Member]	Dec. 31, 2009 Officer LTI Plan Cash Based [Member]	Feb. 28, 2011 Officer LTI Plan Cash Based [Member] Cash Settled [Member]	Dec. 31, 2011 Officer LTI Plan Cash Based [Member] Cash Settled [Member]		Dec. 31, 2010 Officer LTI Plan Cash Based [Member] Cash Settled [Member]		Dec. 31, 2009 Officer LTI Plan Cash Based [Member] Cash Settled [Member]		Feb. 28, 2011 Officer LTI Plan Cash Based [Member] Minimum [Member] Cash Settled [Member]	Dec. 31, 2011 Officer LTI Plan Cash Based [Member] Minimum [Member] Cash Settled [Member]	Feb. 28, 2011 Officer LTI Plan Cash Based [Member] Maximum [Member] Cash Settled [Member]	Dec. 31, 2011 Officer LTI Plan Cash Based [Member] Maximum [Member] Cash Settled [Member]	Dec. 31, 2011 Officer LTI Plan Cash Based [Member] Measurement over three-year performance period [Member]	Dec. 31, 2011 Officer LTI Plan Cash Based [Member] Measurement over four-year performance period [Member]	Dec. 31, 2011 Executive LTI Plan [Member]	Dec. 31, 2010 Executive LTI Plan [Member]	Dec. 31, 2009 Executive LTI Plan [Member]	Aug. 31, 2011 Executive LTI Plan [Member] Cash Settled [Member]	Dec. 31, 2011 Executive LTI Plan [Member] Cash Settled [Member]	Dec. 31, 2011 Executive LTI Plan [Member] Minimum [Member]	Aug. 31, 2011 Executive LTI Plan [Member] Minimum [Member] Cash Settled [Member]	Dec. 31, 2011 Executive LTI Plan [Member] Maximum [Member]	Aug. 31, 2011 Executive LTI Plan [Member] Maximum [Member] Cash Settled [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation, Cash Payout Amount as Percentage of Participants' Base Salaries																																		45.00%		300.00%
Performance target weight as percentage of total performance target																											50.00%	50.00%
Performance period																											3 years	4 years					3 years
Cash payout range amount as percentage of target award																							147.00%	0.00%	172.00%	200.00%								0.00%	144.00%	400.00%	300.00%
Compensation cost recognized related to non-share-based awards	$ (969,000)	[1]	$ 20,369,000	[1]	$ 15,160,000	[1]	$ (4,717,000)	[1]	$ 11,343,000	[1]	$ 7,202,000	[1]	$ 500,000	$ 1,100,000	$ 3,000,000		$ 32,000	[1]	$ 5,618,000	[1]	$ 2,322,000	[1]							$ 5,500,000	$ 3,100,000	$ 2,700,000
Cash used to settle awards																$ 8,400,000																$ 8,200,000

[1] For purposes of calculating compensation cost recognized, we consider awards effectively vested (and we recognize the full compensation costs) when grantees become retirement eligible. Under the terms of our awards, legal vesting upon retirement occurs when the grantee actually separates from service.