| 9 . | INCOME TAXES |
| Current | Deferred | Total | ||||||||||
| Year Ended December 31, 201 7 | ||||||||||||
| U.S. Federal | $ | 37,975 | $ | (90,396 | ) | $ | (52,421 | ) | ||||
| State and local | 4,156 | 4,038 | 8,194 | |||||||||
| Total | $ | 42,131 | $ | (86,358 | ) | $ | (44,227 | ) | ||||
| Year Ended December 31, 201 6 | ||||||||||||
| U.S. Federal | $ | 56,564 | $ | (1,750 | ) | $ | 54,814 | |||||
| State and local | 6,688 | 660 | 7,348 | |||||||||
| Total | $ | 63,252 | $ | (1,090 | ) | $ | 62,162 | |||||
| Year Ended December 31, 201 5 | ||||||||||||
| U.S. Federal | $ | 60,201 | $ | (11,552 | ) | $ | 48,649 | |||||
| State and local | 7,310 | (526 | ) | 6,784 | ||||||||
| Total | $ | 67,511 | $ | (12,078 | ) | $ | 55,433 | |||||
| Year Ended December 31, | ||||||||||||
| 201 7 | 201 6 | 201 5 | ||||||||||
| U.S. Federal taxes at statutory rate | $ | 66,430 | $ | 57,142 | $ | 51,539 | ||||||
| State and local taxes, net of U.S. Federal tax | 5,477 | 4,052 | 3,861 | |||||||||
| Benefit from remeasurement of deferred taxes due to 2017 Tax Act | (113,045 | ) | - | - | ||||||||
| Other, net | (3,089 | ) | 968 | 33 | ||||||||
| Income tax provision (benefit) | $ | (44,227 | ) | $ | 62,162 | $ | 55,433 | |||||
| As of December 31, | ||||||||
| 201 7 | 201 6 | |||||||
| Other benefit obligations | $ | 5,779 | $ | 9,118 | ||||
| Equity-based compensation | 4,711 | 5,041 | ||||||
| Accounts receivable | 262 | 192 | ||||||
| Net operating los ses | 2,992 | - | ||||||
| Other | 765 | 555 | ||||||
| Deferred tax assets | 14,509 | 14,906 | ||||||
| Property, plant and equipment | 95,345 | 133,987 | ||||||
| Goodwill and other intangible assets | 123,745 | 166,268 | ||||||
| Accrued bonus | 1,055 | - | ||||||
| Deferred tax liabilities | 220,145 | 300,255 | ||||||
| Net deferred income tax liability | $ | 205,636 | $ | 285,349 | ||||