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Share-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Fair Value of Option Grants | The fair value of option grants are estimated on the grant date using the Black-Scholes option-pricing model with the following weighted-average assumptions for option grants during the periods indicated below.
|  | Six Months Ended June 30, |
|  | 2016 |  |  | 2015 |
Expected volatility |  |  | 46.12 | % |  |  | 47.18 | %
Expected dividends |  |  | 0.00 | % |  |  | 0.00 | %
Expected term (in years) |  |  | 5.75 |  |  |  | 6.17 |
Risk-free rate |  |  | 1.39 | % |  |  | 1.62 | %
Summary of Company's Stock Option Plan Activity | The following table summarizes the stock option activity for the six months ended June 30, 2016:
In thousands, except per share amounts |  | Number of Shares |  |  | Weighted-Average Price Per Share |  |  | Weighted-Average Remaining Contractual Life (Years) |  |  | Aggregate Intrinsic Value |
Options outstanding at January 1, 2016 |  |  | 1,044 |  |  | $ | 13.36 |  |  |  |  |  |  |  |  |
Granted |  |  | 215 |  |  |  | 16.74 |  |  |  |  |  |  |  |  |
Exercised |  |  | (45 | ) |  |  | 10.21 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (4 | ) |  |  | 15.66 |  |  |  |  |  |  |  |  |
Expired |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Options outstanding at June 30, 2016 |  |  | 1,210 |  |  | $ | 14.07 |  |  |  | 5.7 |  |  | $ | 2,436 |
Options exercisable at June 30, 2016 |  |  | 657 |  |  | $ | 11.83 |  |  |  | 3.4 |  |  | $ | 2,436 |
Available for grant at June 30, 2016 |  |  | 205 |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of Additional Stock Option Information | The following table provides additional stock option information for the periods indicated:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
In thousands, except per share amounts |  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
Weighted-average grant date fair value per share |  | $ | 6.53 |  |  | $ | 6.95 |  |  | $ | 7.42 |  |  | $ | 7.08 |
Intrinsic value of options exercised |  | $ | 22 |  |  | $ | 636 |  |  | $ | 270 |  |  | $ | 894 |
Fair value of stock options that vested |  | $ | 345 |  |  | $ | 411 |  |  | $ | 647 |  |  | $ | 851 |
Summary of Restricted Stock Unit Activity | The following table summarizes restricted stock unit activity during the six months ended June 30, 2016:
In thousands, except per unit amounts |  | Units |  |  | Weighted-Average Grant Date Fair Value |
Non-vested units, beginning of the year |  |  | 124 |  |  | $ | 15.55 |
Granted |  |  | 73 |  |  |  | 17.02 |
Vested |  |  | — |  |  |  | — |
Forfeited |  |  | (1 | ) |  |  | 15.59 |
Non-vested units, at June 30, 2016 |  |  | 196 |  |  | $ | 16.10 |
Summary of Additional Restricted Stock Unit Information | The following table provides additional restricted stock unit information for the periods indicated:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
Weighted-average grant date fair value per unit |  | $ | 14.83 |  |  | $ | 14.75 |  |  | $ | 17.02 |  |  | $ | 14.75 |
Summary of Cash Settled Performance Shares Activity | The following table summarizes cash-settled performance unit activity during the six months ended June 30, 2016:
In thousands, except per unit amounts |  | Units |  |  | Weighted-Average Grant Date Fair Value |
Non-vested units, beginning of the year |  |  | 1,923 |  |  | $ | 1.00 |
Granted |  |  | 1,252 |  |  |  | 1.00 |
Vested |  |  | — |  |  |  | — |
Forfeited |  |  | (21 | ) |  |  | 1.00 |
Non-vested units, at June 30, 2016 |  |  | 3,154 |  |  | $ | 1.00 |
Summary of Restricted Stock Activity | The following table summarizes restricted stock activity during the six months ended June 30, 2016:
In thousands, except per share amounts |  | Shares |  |  | Weighted-Average Grant Date Fair Value |
Non-vested shares, beginning of the year |  |  | 23 |  |  | $ | 16.74 |
Granted |  |  | 37 |  |  |  | 16.37 |
Vested |  |  | (21 | ) |  |  | 16.62 |
Forfeited |  |  | — |  |  |  | — |
Non-vested shares, at June 30, 2016 |  |  | 39 |  |  | $ | 16.46 |
Summary of Additional Restricted Stock Information | The following table provides additional restricted stock information:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
In thousands, except per share amounts |  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
Weighted-average grant date fair value per share |  | $ | 15.89 |  |  | $ | 16.30 |  |  | $ | 16.37 |  |  | $ | 15.29 |
Fair value of restricted stock awards that vested |  | $ | 347 |  |  | $ | 698 |  |  | $ | 347 |  |  | $ | 2,198 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock shares. + 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) -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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- 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=6415400&loc=d3e5070-113901 + Details
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