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EMPLOYEE STOCK COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs | The following table presents stock-based compensation expense and the related tax benefits for the periods indicated:
|  | Year Ended December 31,
($ in thousands) |  | 2017 |  | 2016 |  | 2015
Stock options |  | $ | 360 |  |  | $ | 531 |  |  | $ | 528 |
Restricted stock awards and units |  | 11,732 |  |  | 11,398 |  |  | 8,598 |
Stock appreciation rights |  | 42 |  |  | 18 |  |  | 202 |
Total stock-based compensation expense |  | $ | 12,134 |  |  | $ | 11,947 |  |  | $ | 9,328 |
Related tax benefits |  | $ | 5,078 |  |  | $ | 4,963 |  |  | $ | 3,922 |
Unrecognized Share-Based Compensation Expense | The following table presents unrecognized stock-based compensation expense as of December 31, 2017:
($ in thousands) |  | Unrecognized Expense |  | Weighted-Average Remaining Expected Recognition Period
Stock option awards |  | $ | 267 |  |  | 2.3 years
Restricted stock awards and restricted stock units |  | 9,762 |  |  | 2.5 years
Total |  | $ | 10,029 |  |  | 2.5 years
Schedule of Stock Options | The weighted-average estimated fair value per share options granted was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions.
|  | Year Ended December 31,
($ in thousands, except per share data) |  | 2017 |  | 2016 |  | 2015
Granted date fair value of options granted |  | $ | — |  |  | $ | 1,630 |  |  | $ | 729 |
Fair value of options vested |  | $ | 611 |  |  | $ | 497 |  |  | $ | 481 |
Total intrinsic value of options exercised |  | $ | 3,747 |  |  | $ | 722 |  |  | $ | 75 |
Cash received from options exercised |  | $ | 2,043 |  |  | $ | — |  |  | $ | 501 |
Weighted-average estimated fair value per share of options granted |  | $ | — |  |  | $ | 5.09 |  |  | $ | 3.76 |
Weighted Average Fair Value Assumptions | The following table presents a summary of weighted-average assumptions used for calculating fair value options for the periods indicated:
|  | Year Ended December 31,
|  | 2017 |  | 2016 |  | 2015
Dividend yield |  | — | % |  | 3.57 | % |  | 4.14 | %
Expected volatility |  | — | % |  | 43.30 | % |  | 43.04 | %
Expected term |  | 0.0 years |  |  | 6.5 years |  |  | 6.4 years |
Risk-free interest rate |  | — | % |  | 1.61 | % |  | 1.68 | %
The weighted-average estimated fair value per share of SARs granted was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions.
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Dividend yield | — | % |  | — | % |  | — | %
Expected volatility | — | % |  | — | % |  | 23.79 | %
Expected term | 0.0 years |  |  | 0.0 years |  |  | 2.0 years |
Risk-free interest rate | — | % |  | — | % |  | 0.64 | %
Weighted-average estimated fair value per share of SARs granted | $ | — |  |  | $ | — |  |  | $ | 1.72 |
Option Activity | The following table represents stock option activity and weighted-average exercise price per share for the periods indicated:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| Number of Shares |  | Weighted-Average Exercise Price per Share |  | Number of Shares |  | Weighted-Average Exercise Price per Share |  | Number of Shares |  | Weighted-Average Exercise Price per Share
Outstanding at beginning of year | 968,591 |  |  | $ | 13.95 |  |  | 960,879 |  |  | $ | 12.86 |  |  | 879,070 |  |  | $ | 12.67 |
Granted | — |  |  | $ | — |  |  | 320,000 |  |  | $ | 16.78 |  |  | 193,696 |  |  | $ | 13.28 |
Cash settled | — |  |  | $ | — |  |  | 55,826 |  |  | $ | 14.33 |  |  | — |  |  | $ | — |
Exercised | (488,281 | ) |  | $ | 12.53 |  |  | (51,666 | ) |  | $ | 11.48 |  |  | (43,333 | ) |  | $ | 11.55 |
Forfeited | (269,337 | ) |  | $ | 16.49 |  |  | (202,743 | ) |  | $ | 13.84 |  |  | (68,554 | ) |  | $ | 12.38 |
Expired | — |  |  | $ | — |  |  | (2,053 | ) |  | $ | 13.88 |  |  | — |  |  | $ | — |
Outstanding at end of year | 210,973 |  |  | $ | 13.99 |  |  | 968,591 |  |  | $ | 13.95 |  |  | 960,879 |  |  | $ | 12.86 |
Exercisable at end of year | 105,541 |  |  | $ | 14.68 |  |  | 449,655 |  |  | $ | 12.68 |  |  | 394,613 |  |  | $ | 12.70 |
Nonvested Share | The following table represents changes in unvested stock options and related information as of and for the periods indicated:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| Number of Shares |  | Weighted-Average Exercise Price per Share |  | Number of Shares |  | Weighted-Average Exercise Price per Share |  | Number of Shares |  | Weighted-Average Exercise Price per Share
Outstanding at beginning of year | 518,936 |  |  | $ | 15.04 |  |  | 566,266 |  |  | $ | 12.99 |  |  | 552,672 |  |  | $ | 12.74 |
Granted | — |  |  | $ | — |  |  | 320,000 |  |  | $ | 16.77 |  |  | 193,696 |  |  | $ | 13.28 |
Vested | (174,833 | ) |  | $ | 14.10 |  |  | (170,837 | ) |  | $ | 12.81 |  |  | (170,102 | ) |  | $ | 12.57 |
Forfeited | (238,671 | ) |  | $ | 16.50 |  |  | (196,493 | ) |  | $ | 13.86 |  |  | (10,000 | ) |  | $ | 12.03 |
Outstanding at end of year | 105,432 |  |  | $ | 13.31 |  |  | 518,936 |  |  | $ | 15.04 |  |  | 566,266 |  |  | $ | 12.99 |
Summary of Stock Options Outstanding | The following table presents a summary of stock options outstanding as of December 31, 2017:
| Options Outstanding |  | Options Exercisable
| Number of Shares |  | Intrinsic Value |  | Weighted-Average Exercise Price per Share |  | Weighted-Average Remaining Contractual Life |  | Number of Shares |  | Intrinsic Value |  | Weighted-Average Exercise Price per Share |  | Weighted-Average Remaining Contractual Life
$10.89 to $12.21 | 7,344 |  |  | $ | 71,604 |  |  | $ | 10.90 |  |  | 6.5 years |  | 4,400 |  |  | $ | 42,900 |  |  | $ | 10.90 |  |  | 6.5 years
$12.21 to $13.53 | 116,000 |  |  | 853,760 |  |  | $ | 13.29 |  |  | 7.4 years |  | 32,000 |  |  | 235,520 |  |  | $ | 13.29 |  |  | 7.4 years
$13.53 to $14.85 | 47,464 |  |  | 325,502 |  |  | $ | 13.79 |  |  | 6.6 years |  | 28,976 |  |  | 198,334 |  |  | $ | 13.81 |  |  | 6.3 years
$14.85 to $16.17 | 16,165 |  |  | 78,239 |  |  | $ | 15.81 |  |  | 3.5 years |  | 16,165 |  |  | 78,239 |  |  | $ | 15.81 |  |  | 3.5 years
$16.17 to $17.50 | 24,000 |  |  | 75,600 |  |  | $ | 17.50 |  |  | 8.2 years |  | 24,000 |  |  | 75,600 |  |  | $ | 17.50 |  |  | 8.2 years
Total | 210,973 |  |  | $ | 1,404,705 |  |  | $ | 13.99 |  |  | 7.0 years |  | 105,541 |  |  | $ | 630,593 |  |  | $ | 14.68 |  |  | 6.6 years
Restricted Stock and Restricted Stock Units Activity | The following table presents unvested restricted stock awards and restricted stock units activity as of and for the periods indicated:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| Number of Shares |  | Weighted-Average Price per Share |  | Number of Shares |  | Weighted-Average Price per Share |  | Number of Shares |  | Weighted-Average Price per Share
Outstanding at beginning of year | 1,417,144 |  |  | $ | 16.16 |  |  | 1,516,361 |  |  | $ | 12.40 |  |  | 1,287,302 |  |  | $ | 12.53 |
Granted (1) (2) | 859,722 |  |  | $ | 20.81 |  |  | 1,711,968 |  |  | $ | 17.99 |  |  | 930,830 |  |  | $ | 12.31 |
Vested (1) (3) | (854,031 | ) |  | $ | 15.95 |  |  | (758,999 | ) |  | $ | 13.12 |  |  | (451,196 | ) |  | $ | 12.64 |
Forfeited (1) (4) | (511,202 | ) |  | $ | 17.80 |  |  | (1,052,186 | ) |  | $ | 13.92 |  |  | (250,575 | ) |  | $ | 12.29 |
Outstanding at end of year | 911,633 |  |  | $ | 18.73 |  |  | 1,417,144 |  |  | $ | 16.16 |  |  | 1,516,361 |  |  | $ | 12.40 |
(1) | The vesting of these awards is subject to certain performance targets and goals being met. These performance targets include conditions relating to the Company’s profitability and regulatory standing. The actual amounts of stock released upon vesting will be determined by the Compensation Committee of the Company's Board of Directors upon the Committee's certification of the satisfaction of the target level of performance.
(2) | The number of granted shares/units includes aggregate performance-based shares of 152,709, 602,671 and 62,552, respectively, for the years ended December 31, 2017, 2016 and 2015.
(3) | The number of vested shares includes aggregate performance-based shares/units of 10,000, 0 and 0, respectively, for the years ended December 31, 2017, 2016 and 2015
(4) | The number of forfeited shares includes aggregate performance-based shares/units of 107,545, 615,223 and 0, respectively, for the years ended December 31, 2017, 2016 and 2015.
Summary of all Outstanding SARs | The following table represents SARs activity and the weighted-average exercise price per share for the periods indicated:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| Number of Shares |  | Weighted-Average Exercise Price per Share |  | Number of Shares |  | Weighted-Average Exercise Price per Share |  | Number of Shares |  | Weighted-Average Exercise Price per Share
Outstanding at beginning of year | 1,559,047 |  |  | $ | 11.60 |  |  | 1,561,681 |  |  | $ | 11.60 |  |  | 1,575,394 |  |  | $ | 11.58 |
Granted | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | 2,973 |  |  | $ | 12.27 |
Exercised | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |
Forfeited | (35 | ) |  | $ | 10.09 |  |  | (2,634 | ) |  | $ | 10.09 |  |  | (16,686 | ) |  | $ | 10.09 |
Outstanding at end of year | 1,559,012 |  |  | $ | 11.60 |  |  | 1,559,047 |  |  | $ | 11.60 |  |  | 1,561,681 |  |  | $ | 11.60 |
Exercisable at end of year | 1,559,012 |  |  | $ | 11.60 |  |  | 1,550,978 |  |  | $ | 11.61 |  |  | 1,535,718 |  |  | $ | 11.63 |
The following table represents changes in unvested SARs and related information as of and for the periods indicated:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| Number of Shares |  | Weighted-Average Exercise Price per Share |  | Number of Shares |  | Weighted-Average Exercise Price per Share |  | Number of Shares |  | Weighted-Average Exercise Price per Share
Outstanding at beginning of year | 8,069 |  |  | $ | 10.09 |  |  | 25,963 |  |  | $ | 10.09 |  |  | 147,589 |  |  | $ | 10.09 |
Granted | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | 2,973 |  |  | $ | 12.27 |
Vested | (8,034 | ) |  | $ | 10.09 |  |  | (15,260 | ) |  | $ | 10.09 |  |  | (107,913 | ) |  | $ | 10.15 |
Forfeited | (35 | ) |  | $ | 10.09 |  |  | (2,634 | ) |  | $ | 10.09 |  |  | (16,686 | ) |  | $ | 10.09 |
Outstanding at end of year | — |  |  | $ | — |  |  | 8,069 |  |  | $ | 10.09 |  |  | 25,963 |  |  | $ | 10.09 |

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