Note 11 - Marketable Securities (Details) - Marketable Securities (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Note 11 - Marketable Securities (Details) - Marketable Securities [Line Items]
Equity securities	$ 25,995	$ 19,223
Equity securities	59,723	33,428
Other debt securities	59	284
Other debt securities	3,102	3,397
Total marketable securities	62,766	36,541
Total marketable securities	26,054	19,507
Total marketable securities	62,825	36,825
Amortized Cost [Member]
Note 11 - Marketable Securities (Details) - Marketable Securities [Line Items]
Equity securities	33,728	14,205
Other debt securities	3,043	3,113
Total marketable securities	$ 36,771	$ 17,318