Note 7 - Fair Value Measurements - Fair Value Methods Used for Measuring Fair Values of Financial Instruments on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Inputs, Level 1 [Member]
Equity securities	$ 56,747	$ 40,879
Fair Value, Inputs, Level 2 [Member]
Mortgage loans held-for-sale, net	197,021	149,211
Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt securities (available-for-sale)	$ 0	$ 34,866

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

No definition available.

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Period Type:	instant