Note 28 - Parent Company - Only Financial Statements - Condensed Balance Sheets (Details) (Parentheticals) - $ / shares |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Common stock, par value (in dollars per share) | $ 1 | $ 1 |
| Common stock, shares authorized (in shares) | 100,000,000 | 100,000,000 |
| Common stock, shares issued (in shares) | 21,110,968 | 20,931,416 |
| Common stock, shares outstanding (in shares) | 16,939,715 | 17,071,523 |
| Treasury stock, shares (in shares) | 4,171,253 | 3,859,893 |
| Parent Company [Member] | ||
| Common stock, par value (in dollars per share) | $ 1 | $ 1 |
| Common stock, shares authorized (in shares) | 100,000,000 | 100,000,000 |
| Common stock, shares issued (in shares) | 21,110,968 | 20,931,416 |
| Common stock, shares outstanding (in shares) | 16,939,715 | 17,071,523 |
| Treasury stock, shares (in shares) | 4,171,253 | 3,859,893 |