| Net income | 43.27M |
| Depreciation | 78.82M |
| Deferred income taxes | -5.68M |
| Gain on disposal of property and equipment | |
| Trade receivables | 9.31M |
| Prepaid expenses and other current assets | 2.19M |
| Accounts payable, accrued liabilities, and accrued expenses | 1.29M |
| Accrued income taxes | -2.47M |
| Net cash provided by operating activities | 120.2M |
| Proceeds from sale of property and equipment | 37.31M |
| Purchases of property and equipment, net of trades | -69.98M |
| Maturity and calls of investments | |
| Purchases of investments | |
| Change in other assets | |
| Net cash provided by (used in) investing activities | -33.49M |
| Cash dividend | |
| Net cash used in financing activities | -19.68M |
| Net increase in cash and cash equivalents | 67.03M |
| Beginning of period | 33.23M |
| End of period | 100.26M |
| Cash paid during the period for income taxes, net of refunds | 29.78M |
| Purchased property and equipment in accounts payable | 2.53M |
| Common stock dividends declared in accounts payable | |