| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jul'18 | Apr'18 |
|---|---|---|---|---|---|---|---|---|
Operating revenues | ||||||||
Revenues | ||||||||
366,600 | 355,900 | 357,300 | 366,400 | 357,200 | 335,200 | 321,100 | 333,200 | 337,300 |
Operating Expenses [Abstract] | ||||||||
Cost of services (exclusive of depreciation and amortization) | ||||||||
231,000 | 220,800 | 221,300 | 227,700 | 218,400 | 210,900 | 202,500 | 201,100 | 206,700 |
Selling, General and Administrative Expense | ||||||||
38,000 | 36,200 | 38,900 | 33,700 | 33,600 | 28,200 | 31,700 | 31,300 | 32,600 |
Depreciation, Depletion and Amortization | ||||||||
22,500 | 22,400 | 22,100 | 22,100 | 21,800 | 24,300 | 24,300 | 24,700 | 24,100 |
Total operating expenses | ||||||||
291,500 | 279,400 | 282,300 | 283,500 | 273,800 | 263,400 | 258,500 | 257,100 | 263,400 |
Operating profit | ||||||||
75,100 | 76,500 | 75,000 | 82,900 | 83,400 | 71,800 | 62,600 | 76,100 | 73,900 |
Interest Expense | ||||||||
16,000 | 16,600 | 17,500 | 11,900 | 9,700 | 9,800 | 9,600 | 9,700 | 9,600 |
Other Nonoperating Income (Expense) | ||||||||
700 | 0 | 0 | 200 | -100 | -300 | 0 | 800 | 0 |
Income before income taxes | ||||||||
59,800 | 59,900 | 57,500 | 71,200 | 73,600 | 61,700 | 53,000 | 67,200 | 64,300 |
Income Tax Expense (Benefit) | ||||||||
15,100 | 14,300 | 15,700 | 19,900 | 19,100 | 15,100 | 14,000 | 17,400 | 16,000 |
Net income | ||||||||
44,700 | 45,600 | 41,800 | 51,300 | 54,500 | 46,600 | 39,000 | 49,800 | 48,300 |
Net income per share | ||||||||
Basic (in dollars per share) | ||||||||
0.33 | 0.34 | 0.31 | 0.38 | 0.41 | 0.35 | 0.29 | 0.37 | 0.36 |
Diluted (in dollars per share) | ||||||||
0.33 | 0.34 | 0.31 | 0.38 | 0.41 | 0.35 | 0.29 | 0.37 | 0.36 |