Note 3 - Other Revenues (Details) - Summary of Other Revenues (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 3 - Other Revenues (Details) - Summary of Other Revenues [Line Items]
Other Revenues	$ 42,396	$ 53,120	$ 55,616
Insurance Services [Member]
Note 3 - Other Revenues (Details) - Summary of Other Revenues [Line Items]
Other Revenues	7,215	15,143	15,671
Management and Accounting Services Fees [Member]
Note 3 - Other Revenues (Details) - Summary of Other Revenues [Line Items]
Other Revenues	15,184	18,160	20,042
Rental Income [Member]
Note 3 - Other Revenues (Details) - Summary of Other Revenues [Line Items]
Other Revenues	19,123	19,132	19,314
Other Income [Member]
Note 3 - Other Revenues (Details) - Summary of Other Revenues [Line Items]
Other Revenues	$ 874	$ 685	$ 589