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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock option activity | The following table summarizes the stock option activity during the year ended December 31, 2014 for all grants under the Equity Compensation Plan:
|  | Options |  | Weighted Average Exercise Price
Outstanding at January 1, 2014 |  | 570,483 |  |  | $ | 10.43 |
Granted |  | — |  |  | — |
Exercised |  | (184,798 | ) |  | 10.25 |
Forfeited |  | — |  |  | — |
Cancelled |  | (1,250 | ) |  | 9.88 |
Outstanding at December 31, 2014 |  | 384,435 |  |  | 10.52 |
Vested and expected to vest |  | 384,435 |  |  | 10.52 |
Exercisable at December 31, 2014 |  | 384,435 |  |  | $ | 10.52 |
Summary of stock options outstanding and exercisable by price range | A summary of stock options outstanding and exercisable by price range at December 31, 2014 is as follows (in thousands, except share and per share data):
|  | Outstanding and Exercisable
|  | Number of Options Outstanding at December 31, |  | Weighted Average Remaining Contractual |  | Weighted Average Exercise |  | Aggregate Intrinsic
Exercise Price |  | 2014 |  | Life (Years) |  | Price |  | Value (A)
$8.14-$10.04 |  | 94,365 |  | 0.1 |  | $ | 8.33 |  |  | $ | 1,832 |
$10.51-$10.68 |  | 238,800 |  | 1.0 |  | $ | 10.52 |  |  | $ | 4,116 |
$12.04-$18.34 |  | 51,270 |  | 1.72 |  | $ | 14.58 |  |  | $ | 675 |
Total |  | 384,435 |  | 0.88 |  | $ | 10.52 |  |  | $ | 6,623 |
_______________________________________________ (A) The difference between the stock option’s exercise price and the closing price of the common stock at December 31, 2014.
Restricted stock and units activity | The following table summarizes the activity related to restricted stock award share based payment awards:
|  | Number of Shares |  | Weighted- Average Grant-Date Fair Value
Unvested, January 1, 2014 |  | 321,018 |  |  | $ | 22.35 |
Granted |  | 31,412 |  |  | 33.40 |
Vested |  | (165,559 | ) |  | 22.03 |
Forfeited |  | (400 | ) |  | 31.11 |
Unvested, December 31, 2014 |  | 186,471 |  |  | $ | 24.47 |
The following table summarizes the activity related to restricted stock unit share based payment awards:
|  | Number of Shares |  | Weighted- Average Grant-Date Fair Value
Unvested, January 1, 2014 |  | 205,578 |  |  | $ | 34.40 |
Granted |  | 100,827 |  |  | 31.76 |
Vested |  | (92,306 | ) |  | 34.91 |
Forfeited |  | (5,986 | ) |  | 33.20 |
Unvested, December 31, 2014 |  | 208,113 |  |  | $ | 32.93 |
Schedule of Nonvested Performance-based Units Activity [Table Text Block] | The following table summarizes the activity related to performance unit awards:
|  | Number of Shares |  | Weighted- Average Grant-Date Fair Value
Unvested, January 1, 2014 |  | 35,776 |  |  | $ | 40.17 |
Granted |  | 36,092 |  |  | 38.67 |
Vested |  | — |  |  | — |
Forfeited |  | — |  |  | — |
Unvested, December 31, 2014 |  | 71,868 |  |  | $ | 39.42 |

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- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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