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EMPLOYEE STOCK COMPENSATION (Tables) | 3 Months Ended
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Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Unrecognized Share-Based Compensation Expense | The following table presents unrecognized share-based compensation expense as of March 31, 2017:
| March 31, 2017
| Unrecognized Expense |  | Average Remaining Expected Recognition Period
| ($ in thousands)
Stock option awards | $ | 1,281 |  |  | 3.5 years
Restricted stock awards and restricted stock units | 6,925 |  |  | 2.9 years
Total | $ | 8,206 |  |  | 3.0 years
Option Activity | The following table represents stock option activity as of and for the three months ended March 31, 2017:
| Three Months Ended March 31, 2017
| Number of Shares |  | Weighted- Average Exercise Price per Share |  | Weighted- Average Remaining Contract Term |  | Aggregated Intrinsic Value (In thousands)
Outstanding at beginning of period | 968,591 |  |  | $ | 13.95 |  |  | 6.4 years |  | $ | 3,336 |
Exercised | (91,000 | ) |  | $ | 12.06 |  |  | 4.8 years |  |  |
Outstanding at end of period | 877,591 |  |  | $ | 14.14 |  |  | 6.5 years |  | $ | 5,755 |
Exercisable at end of period | 364,253 |  |  | $ | 12.84 |  |  | 6.5 years |  | $ | 2,862 |
Nonvested Share | The following table represents changes in unvested stock options as of and for the three months ended March 31, 2017:
| Three Months Ended
| March 31, 2017
| Number of Shares |  | Weighted- Average Exercise Price per Share
Outstanding at beginning of period | 518,936 |  |  | $ | 15.04 |
Vested | (5,598 | ) |  | $ | 13.19 |
Outstanding at end of period | 513,338 |  |  | $ | 15.07 |
Restricted Stock and Restricted Stock Units Activity | The following table represents unvested restricted stock awards and restricted stock units activity as of and for the three months ended March 31, 2017:
| Three Months Ended
| March 31, 2017
| Number of Shares |  | Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of period | 1,417,144 |  |  | $ | 16.16 |
Vested | (302,842 | ) |  | $ | 18.95 |
Forfeited | (57,881 | ) |  | $ | 14.85 |
Outstanding at end of period | 1,056,421 |  |  | $ | 15.43 |
Summary of all Outstanding SARs | The following table represents SARs activity as of and for the three months ended March 31, 2017:
| Three Months Ended March 31, 2017
| Number of Shares |  | Weighted- Average Exercise Price per Share |  | Weighted- Average Remaining Contract Term |  | Aggregated Intrinsic Value (In thousands)
Outstanding at beginning of period | 1,559,047 |  |  | $ | 11.60 |  |  | 5.6 years |  | $ | 8,961 |
Forfeited | (35 | ) |  | $ | 10.09 |  |  | 5.6 years |  |  |
Outstanding at end of period | 1,559,012 |  |  | $ | 11.60 |  |  | 5.4 years |  | $ | 14,183 |
Exercisable at end of period | 1,559,012 |  |  | $ | 11.60 |  |  | 5.4 years |  | $ | 14,183 |
The following table represents changes in unvested SARs as of and for the three months ended March 31, 2017:
| Three Months Ended
| March 31, 2017
| Number of Shares |  | Weighted- Average Exercise Price per Share
Outstanding at beginning of period | 8,069 |  |  | $ | 10.09 |
Vested | (8,034 | ) |  | $ | 10.09 |
Forfeited | (35 | ) |  | $ | 10.09 |
Outstanding at end of period | — |  |  | $ | 10.09 |

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