v3.8.0.1

Share-Based Payments and Other Compensation (Tables) | 12 Months Ended
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Dec. 31, 2017
Share-Based Payments and Other Compensation |
Summary of weighted-average assumptions |
|  | 2017 |  | 2016 |  | 2015 |
Dividend yield |  |  | — | % |  | — | % |  | — | %
Volatility rate |  |  | 33.7 | % |  | 40.5 | % |  | 38.0 | %
Risk-free interest rate |  |  | 1.46 | % |  | 0.91 | % |  | 1.10 | %
Expected life (years) |  |  | 2.92 |  |  | 2.91 |  |  | 2.95 |
Weighted average fair value of units granted |  | $ | 19.19 |  | $ | 3.37 |  | $ | 5.95 |
Summary of stock options activity |
|  | For the Years Ended December 31, |
|  | 2017 |  | 2016 |  | 2015 |
|  |  |  | Weighted |  |  |  | Weighted |  |  |  | Weighted |
|  |  |  | Average |  |  |  | Average |  |  |  | Average |
|  | Stock |  | Exercise Price |  | Stock |  | Exercise Price |  | Stock |  | Exercise Price |
|  | Options |  | Per Share |  | Options |  | Per Share |  | Options |  | Per Share |
Outstanding as of beginning of year |  | 445,036 |  | $ | 17.05 |  | 545,036 |  | $ | 17.01 |  | 555,036 |  | $ | 17.00 |
Granted |  | 95,674 |  |  | 17.74 |  | — |  |  | — |  | — |  |  | — |
Exercised |  | — |  |  | — |  | — |  |  | — |  | — |  |  | — |
Forfeited |  | — |  |  | — |  | (100,000) |  |  | 16.80 |  | (10,000) |  |  | 16.80 |
Outstanding as of end of year |  | 540,710 |  | $ | 17.17 |  | 445,036 |  | $ | 17.05 |  | 545,036 |  | $ | 17.01 |
Exercisable as of end of year |  | 468,958 |  | $ | 17.09 |  | 333,777 |  | $ | 17.05 |  | 272,518 |  | $ | 17.01 |
Summary of restricted stock and stock units activity |
|  | For the Years Ended December 31, |
|  | 2017 |  | 2016 |
|  | Performance-Based |  | Service-Based |  | Performance-Based |  | Service-Based |
|  |  |  | Weighted |  |  |  | Weighted |  |  |  | Weighted |  |  |  | Weighted |
|  | Number of |  | Average |  | Number of |  | Average |  | Number of |  | Average |  | Number of |  | Average |
|  | Shares or |  | Grant Date |  | Shares or |  | Grant Date |  | Shares or |  | Grant Date |  | Shares or |  | Grant Date |
|  | Units |  | Fair Value |  | Units | (1) | Fair Value |  | Units |  | Fair Value |  | Units | (1) | Fair Value |
Outstanding as of beginning of year |  | 305,543 |  | $ | 4.78 |  | 157,264 |  | $ | 11.75 |  | 235,746 |  | $ | 8.55 |  | 116,592 |  | $ | 15.57 |
Granted |  | 82,349 |  |  | 18.32 |  | 101,644 |  |  | 17.31 |  | 198,174 |  |  | 3.37 |  | 154,176 |  |  | 10.43 |
Vested |  | (6,536) |  |  | 15.80 |  | (88,412) |  |  | 13.56 |  | (10,821) |  |  | 15.80 |  | (74,571) |  |  | 13.26 |
Expired/forfeited/cancelled |  | (153,801) |  |  | 5.64 |  | (25,869) |  |  | 12.45 |  | (117,556) |  |  | 7.38 |  | (38,933) |  |  | 11.95 |
Outstanding as of end of year |  | 227,555 |  | $ | 11.16 |  | 144,627 |  | $ | 20.72 |  | 305,543 |  | $ | 4.78 |  | 157,264 |  | $ | 11.75 |
| (1) |  | Restricted stock shares are considered legally outstanding but are not considered outstanding for accounting purposes until the vesting conditions are satisfied in accordance with authoritative accounting guidance. Additionally, the balances do not include the restricted stock units deferred under our director deferral program discussed below.

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: 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=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&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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