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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Restricted Stock Activity | A summary of all restricted stock activity as of December 31, 2016 and changes during the year then ended is presented below.
| Number of Shares |  | Weighted Average Grant Date Fair Value |  | Weighted Average Remaining Contractual Life (years) |  | Aggregate Intrinsic Value (in thousands)
Outstanding, December 31, 2015 | 145,558 |  |  | $ | 19.17 |  |  | 9.07 |  |  | $ | 3,246 |
Granted | 139,451 |  |  | 21.34 |  |  | — |  |  | 3,007 |
Vested | (145,558 | ) |  | 19.17 |  |  | — |  |  | 2,963 |
Canceled/Forfeited | — |  |  | — |  |  | — |  |  | — |
Outstanding, December 31, 2016 | 139,451 |  |  | $ | 21.34 |  |  | 9.13 |  |  | $ | 4,483 |
Stock Options Fair Value Assumptions |
Weighted average Black -Scholes fair value assumption during the years ended December 31, are as follows: | 2015 |  | 2014
Risk free rate | 1.56 | % |  |  | 1.96 | % |
Expected life | 6 years |  |  |  | 6 years |  |
Expected volatility | 45.07 | % |  |  | 58.44 | % |
Expected dividend yield | — |  |  |  | — |  |
Summary of Option Activity | A summary of all option activity as of December 31, 2016 and changes during the year then ended is presented below.
| Number of Stock Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (years) |  | Aggregate Intrinsic Value (in thousands)
Outstanding, December 31, 2015 | 414,769 |  |  | $ | 19.07 |  |  | 5.08 |  | $ | 1,814 |
Granted | — |  |  | — |  |  |  |  |  |
Exercised | (62,083 | ) |  | 16.79 |  |  |  |  | 625 |
Canceled/Forfeited | (2,500 | ) |  | 22.90 |  |  |  |  | — |
Expired | — |  |  | — |  |  |  |  |
Outstanding, December 31, 2016 | 350,186 |  |  | $ | 19.45 |  |  | 4.25 |  | $ | 4,453 |
Exercisable, December 31, 2016 | 299,353 |  |  | $ | 18.41 |  |  | 3.63 |  | $ | 4,118 |
Summary of Stock Options Outstanding Information | The following table summarizes information about our stock options outstanding at December 31, 2016:
Range of Exercise Prices |  | Options Outstanding |  | Options Exercisable
| Shares |  | Weighted Average Remaining Contractual Life (years) |  | Weighted Average Exercise Price |  | Shares |  | Weighted Average Exercise Price
$0.01-15.70 |  | 67,352 |  |  | 2.62 |  | $ | 9.94 |  |  | 67,352 |  |  | $ | 9.94 |
$15.71-17.81 |  | 72,750 |  |  | 2.79 |  | $ | 17.53 |  |  | 72,750 |  |  | $ | 17.53 |
$17.82-20.48 |  | 107,250 |  |  | 2.92 |  | $ | 19.68 |  |  | 107,250 |  |  | $ | 19.68 |
$20.49-33.36 |  | 102,834 |  |  | 7.74 |  | $ | 26.80 |  |  | 52,001 |  |  | $ | 27.98 |
|  | 350,186 |  |  | 4.25 |  | $ | 19.45 |  |  | 299,353 |  |  | $ | 18.41 |
Summary of the Status of Unvested Stock Options | The summary of the status of our unvested stock options as of December 31, 2016 and changes during the year then ended is presented below.
Unvested stock options: | Shares |  | Weighted Average Grant Date Fair Value
Unvested at December 31, 2015 | 101,836 |  |  | $ | 12.67 |
Granted | — |  |  | $ | — |
Vested | (49,336 | ) |  | $ | 12.74 |
Cancelled/Forfeited | (1,667 | ) |  | $ | 10.33 |
Unvested at December 31, 2016 | 50,833 |  |  | $ | 12.67 |

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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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- 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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- 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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