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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] |
Schedule of Share-based Compensation, Restricted Stock Activity | A summary of all restricted stock activity as of December 31, 2014 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, 2013 | 103,618 |  |  | $ | 18.94 |  |  | 9.07 |  |  | $ | 2,857 |
Granted | 92,572 |  |  | 29.18 |  |  | — |  |  | 2,701 |
Vested | (96,952 | ) |  | 19.21 |  |  | — |  |  | 2,935 |
Canceled/Forfeited | — |  |  | — |  |  | — |  |  | — |
Outstanding, December 31, 2014 | 99,238 |  |  | $ | 28.22 |  |  | 9.00 |  |  | $ | 2,286 |
Stock Options, Valuation Assumptions |
Weighted average Black -Scholes fair value assumption during the years ended December 31, are as follows: | 2014 |  | 2013 |  | 2012
Risk free rate | 1.96 | % |  |  | 1.02 | % |  |  | 0.98 | % |
Expected life | 6 years |  |  |  | 6 years |  |  |  | 5 years |  |
Expected volatility | 58.44 | % |  |  | 60.39 | % |  |  | 62.37 | % |
Expected dividend yield | — |  |  |  | — |  |  |  | — |  |
Schedule of Share-based Compensation, Stock Options, Activity | A summary of all option activity as of December 31, 2014 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, 2013 | 378,852 |  |  | $ | 15.61 |  |  | 5.23 |  | $ | 4,533 |
Granted | 60,000 |  |  | 30.06 |  |  |  |  |  |
Exercised | (3,500 | ) |  | 17.13 |  |  |  |  | 48 |
Canceled/Forfeited | (3,083 | ) |  | 22.13 |  |  |  |  | 24 |
Expired | — |  |  | — |  |  |  |  |
Outstanding, December 31, 2014 | 432,269 |  |  | $ | 17.55 |  |  | 10.10 |  | $ | 2,786 |
Exercisable, December 31, 2014 | 340,435 |  |  | $ | 15.34 |  |  | 8.99 |  | $ | 2,622 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range | The following table summarizes information about our stock options outstanding at December 31, 2014:
Range of Exercise Prices |  | Options Outstanding |  | Options Exercisable
| Shares |  | Weighted Average Remaining Contractual Life (years) |  | Weighted Average Exercise Price |  | Shares |  | Weighted Average Exercise Price
$0.01-9.43 |  | 71,352 |  |  | 1.97 |  | $ | 8.72 |  |  | 71,352 |  |  | $ | 8.72 |
$9.44-15.60 |  | 70,000 |  |  | 4.06 |  | $ | 12.51 |  |  | 64,166 |  |  | $ | 12.30 |
$15.61-18.75 |  | 146,917 |  |  | 5.60 |  | $ | 17.81 |  |  | 119,917 |  |  | $ | 17.60 |
$18.76-33.36 |  | 144,000 |  |  | 6.03 |  | $ | 24.12 |  |  | 85,000 |  |  | $ | 20.00 |
|  | 432,269 |  |  | 4.89 |  | $ | 17.55 |  |  | 340,435 |  |  | $ | 15.34 |
Schedule of Stock Options Roll Forward | The summary of the status of our unvested stock options as of December 31, 2014 and changes during the year then ended is presented below.
Unvested stock options: | Shares |  | Weighted Average Grant Date Fair Value
Unvested at December 31, 2013 | 63,082 |  |  | $ | 9.87 |
Granted | 60,000 |  |  | $ | 16.56 |
Vested | (28,915 | ) |  | $ | 9.80 |
Cancelled/Forfeited | (2,333 | ) |  | $ | 12.87 |
Unvested at December 31, 2014 | 91,834 |  |  | $ | 14.19 |

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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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- 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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