| 2013 | 2012 | ||||
| Depreciation and amortization | $ | 43,623 | $ | 41,411 | |
| Intangibles (nonamortizable) | 1,874 | 1,874 | |||
| Employee benefits | (9,072) | (13,350) | |||
| Net operating loss and other carryforwards | (2,272) | (2,167) | |||
| Other – net | 29 | (1,199) | |||
| Subtotal | 34,182 | 26,569 | |||
| Deferred tax assets valuation allowance | 927 | 886 | |||
| Net deferred tax liabilities | $ | 35,109 | $ | 27,455 | |
| Net long-term deferred tax liabilities | $ | 36,308 | $ | 28,491 | |
| Less: Net current deferred tax assets | (1,199) | (1,036) | |||
| Net deferred tax liabilities | $ | 35,109 | $ | 27,455 |