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INCOME TAXES (Tables) | 12 Months Ended
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Dec. 31, 2015
Income Tax Disclosure [Abstract] |
Schedule of Income before Income Tax, Domestic and Foreign | The consolidated income (loss) before income taxes for 2015, 2014 and 2013 consists of the following (in thousands):
|  | 2015 |  | 2014 |  | 2013 |
Domestic |  | $ | 163,325 |  | $ | 98,246 |  | $ | 77,465 |
Foreign |  |  | (14) |  |  | 216 |  |  | 158 |
Total income before income taxes |  | $ | 163,311 |  | $ | 98,462 |  | $ | 77,623 |
Schedule of Components of Income Tax Expense (Benefit) | The consolidated income tax expense for 2015, 2014 and 2013 consists of the following components (in thousands):
|  | 2015 |  | 2014 |  | 2013 |
Current |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 58,090 |  | $ | 19,036 |  | $ | 158 |
State |  |  | 8,627 |  |  | 1,805 |  |  | 717 |
Foreign |  |  | 54 |  |  | 118 |  |  | 130 |
|  | $ | 66,771 |  | $ | 20,959 |  | $ | 1,005 |
Deferred |  |  |  |  |  |  |  |  |  |
Federal |  | $ | (7,930) |  | $ | 12,913 |  | $ | 26,792 |
State |  |  | 288 |  |  | 3,778 |  |  | 3,412 |
Foreign |  |  | (107) |  |  | (118) |  |  | (115) |
|  | $ | (7,749) |  | $ | 16,573 |  | $ | 30,089 |
Total consolidated expense |  | $ | 59,022 |  | $ | 37,532 |  | $ | 31,094 |
Schedule of Effective Income Tax Rate Reconciliation | The following table provides a reconciliation of differences from the U.S. Federal statutory rate of 35% as follows (in thousands):
|  | 2015 |  |  | 2014 |  |  | 2013 |
Pretax book income |  | $ | 163,311 |  |  | $ | 98,462 |  |  | $ | 77,623 |
Federal tax expense at 35% statutory rate |  |  | 57,159 |  |  |  | 34,462 |  |  |  | 27,168 |
State and local income taxes |  |  | 6,190 |  |  |  | 4,808 |  |  |  | 3,870 |
Foreign tax rate differential |  |  | (3 | ) |  |  | (206 | ) |  |  | (41 | )
Benefit of domestic production deduction |  |  | (5,255 | ) |  |  | (2,010 | ) |  |  | - |
Other |  |  | 931 |  |  |  | 478 |  |  |  | 97 |
Total income tax expense |  | $ | 59,022 |  |  | $ | 37,532 |  |  | $ | 31,094 |
Schedule of Deferred Tax Assets and Liabilities | The components of deferred tax assets and deferred tax liabilities as of December 31, 2015 and 2014 were as follows (in thousands):
|  | 2015 |  | 2014 |
Deferred tax assets |  |  |  |  |  |  |
Tax credits and loss carryforwards |  | $ | 563 |  | $ | 2,550 |
Accrued liabilities |  |  | 9,211 |  |  | 6,882 |
Incentive compensation |  |  | 24,682 |  |  | 19,333 |
Other |  |  | 3,909 |  |  | 3,389 |
|  | $ | 38,365 |  | $ | 32,154 |
Deferred tax liabilities |  |  |  |  |  |  |
Property, plant and equipment |  |  | (4,000) |  |  | (2,858) |
Intangibles |  |  | (5,325) |  |  | (5,565) |
Prepaid assets |  |  | (697) |  |  | (638) |
Convertible note discount |  |  | (3,234) |  |  | (5,117) |
Other |  |  | (1,658) |  |  | (2,025) |
|  | $ | (14,914) |  | $ | (16,203) |
Net deferred tax asset before valuation allowances and reserves |  | $ | 23,451 |  | $ | 15,951 |
Valuation allowances |  |  | (1,159) |  |  | (1,307) |
Net deferred tax asset |  | $ | 22,292 |  | $ | 14,644 |
Schedule of Unrecognized Tax Benefits Roll Forward | A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands) and all balances as of December 31, 2015 are included in either Other Noncurrent Liabilities or Current Deferred Income Taxes in the Company’s Consolidated Balance Sheet:
Balance at January 1, 2014 |  | $ | 10,971 |
Decrease in prior year tax positions |  |  | (323) |
Balance at December 31, 2014 |  | $ | 10,648 |
Decrease in prior year tax positions |  |  | (23) |
Balance at December 31, 2015 |  | $ | 10,625 |

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