Note 4 - Other Revenues (Detail) - Other Revenues (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other Revenues	$ 55,876	$ 58,048	$ 57,024
Insurance Services [Member]
Other Revenues	15,671	15,657	17,068
Management and Accounting Services Fees [Member]
Other Revenues	20,042	21,601	20,897
Rental Income [Member]
Other Revenues	19,039	19,124	17,375
Other Income [Member]
Other Revenues	$ 1,124	$ 1,666	$ 1,684