Note 16 - Fair Value Disclosure of Financial Instruments (Detail) - Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets:
Marketable equity securities	$ 33,428	$ 30,462
Liabilities:
Interest rate swaps		222
Assets:
Real estate	52,505	5,289
Other investments		9,041
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Marketable equity securities	33,428	30,462
Equity Securities [Member]
Assets:
Marketable equity securities	33,428	30,462
Fair Value, Inputs, Level 2 [Member]
Liabilities:
Interest rate swaps		222
Assets:
Other investments		9,041
Fair Value, Inputs, Level 3 [Member]
Assets:
Real estate	$ 52,505	$ 5,289