| | | | | | 208,340.0 | 183,320.0 | 220,710.0 | 287,900.0 | 332,720.0 | 296,390.0 |
| | | | | | 690.0 | 590.0 | 800.0 | 2,050.0 | 2,350.0 | 2,350.0 |
| | | | | | 209,030.0 | 183,910.0 | 221,510.0 | 289,950.0 | 335,070.0 | 298,740.0 |
| | | | | | -4.4% | -12.0% | 20.4% | 30.9% | 15.6% | -12.2% |
Cost of Goods Sold, Total | | | | | | 57,350.0 | 53,180.0 | 63,430.0 | 77,020.0 | 97,660.0 | 90,220.0 |
| | | | | | 151,680.0 | 130,730.0 | 158,080.0 | 212,930.0 | 237,410.0 | 208,520.0 |
Selling General & Admin Expenses, Total | | | | | | 9,050.0 | 6,890.0 | 7,600.0 | 7,180.0 | 8,450.0 | 8,110.0 |
Exploration / Drilling Costs, Total | | | | | | 1,160.0 | 140.0 | 100.0 | 160.0 | 180.0 | 180.0 |
| | | | | | — | — | — | — | — | — |
Depreciation & Amortization | | | | | | 18,830.0 | 22,790.0 | 25,310.0 | 29,170.0 | 32,640.0 | 33,610.0 |
| | | | | | 34,100.0 | 34,730.0 | 33,370.0 | 42,970.0 | 53,710.0 | 55,740.0 |
Other Operating Expenses, Total | | | | | | 63,140.0 | 64,550.0 | 66,380.0 | 79,480.0 | 94,980.0 | 97,640.0 |
| | | | | | 88,540.0 | 66,180.0 | 91,700.0 | 133,450.0 | 142,430.0 | 110,880.0 |
| | | | | | -800.0 | -780.0 | -3,510.0 | -2,650.0 | -2,850.0 | -6,400.0 |
Interest And Investment Income | | | | | | 8,010.0 | 9,880.0 | 9,400.0 | 8,380.0 | 11,540.0 | 11,540.0 |
| | | | | | 7,210.0 | 9,100.0 | 5,890.0 | 5,730.0 | 8,690.0 | 5,140.0 |
Currency Exchange Gains (Loss) | | | | | | -500.0 | 30.0 | 130.0 | 270.0 | 360.0 | 360.0 |
Other Non Operating Income (Expenses) | | | | | | 190.0 | 360.0 | 560.0 | 1,010.0 | 1,330.0 | -390.0 |
| | | | | | 95,440.0 | 75,670.0 | 98,280.0 | 140,460.0 | 152,810.0 | 115,990.0 |
| | | | | | — | — | — | — | — | — |
Gain (Loss) On Sale Of Investments | | | | | | 8,640.0 | 8,460.0 | 7,040.0 | 1,770.0 | 160.0 | 160.0 |
Gain (Loss) On Sale Of Assets | | | | | | 480.0 | -230.0 | 420.0 | 110.0 | -90.0 | -90.0 |
| | | | | | — | — | — | — | — | — |
| | | | | | — | — | — | -1,340.0 | — | — |
| | | | | | 104,560.0 | 83,900.0 | 105,740.0 | 141,000.0 | 152,880.0 | 116,060.0 |
| | | | | | 25,000.0 | 15,850.0 | 25,940.0 | 44,710.0 | 47,770.0 | 31,740.0 |
Earnings From Continuing Operations | | | | | | 79,560.0 | 68,050.0 | 79,800.0 | 96,290.0 | 105,110.0 | 84,320.0 |
| | | | | | 79,560.0 | 68,050.0 | 79,800.0 | 96,290.0 | 105,110.0 | 84,320.0 |
Net Income to Common Incl Extra Items | | | | | | 79,560.0 | 68,050.0 | 79,800.0 | 96,290.0 | 105,110.0 | 84,320.0 |
Net Income to Common Excl. Extra Items | | | | | | 79,560.0 | 68,050.0 | 79,800.0 | 96,290.0 | 105,110.0 | 84,320.0 |
| | | | | | 4,225.3 | 4,225.3 | 4,225.3 | 4,225.3 | 4,225.3 | 4,227.4 |
Weighted Avg. Shares Outstanding | | | | | | 4,230.0 | 4,230.0 | 4,230.0 | 4,230.0 | 4,230.0 | 4,230.0 |
Weighted Avg. Shares Outstanding Dil | | | | | | 4,230.0 | 4,230.0 | 4,230.0 | 4,230.0 | 4,230.0 | 4,230.0 |
| | | | | | 18.8 | 16.1 | 18.9 | 22.8 | 24.8 | 19.9 |
| | | | | | 18.8 | 16.1 | 18.9 | 22.8 | 24.8 | 19.9 |
| | | | | | 107,280.0 | 88,820.0 | 116,850.0 | 162,450.0 | 174,850.0 | 144,270.0 |