| Consolidated Statements of Income [Abstract] | |
| Product sales | 951.58M |
| Shipping & handling revenues | 172.06M |
| Net sales | 1.12B |
| Cost of sales | 225.98M |
| Gross Profit | 897.67M |
| Royalty overrides | 364.03M |
| Selling, general & administrative expenses | 364.72M |
| Operating income | 168.92M |
| Interest expense, net | |
| Income before income taxes | 163.55M |
| Income taxes | 44.69M |
| NET INCOME | 118.86M |
| Earnings per share: | |
| Basic | 1.14 |
| Diluted | 1.1 |
| Weighted average shares outstanding: | |
| Basic | 104.12M |
| Diluted | 108.07M |
| Dividends declared per share | 0.3 |