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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2016
Share-based Compensation [Abstract] |
Schedule of weighted-average assumptions used to value options as of their grant date | The weighted-average assumptions used to value options as of their grant date were as follows:
| Year Ended December 31,
| 2016 |  | 2015 |  | 2014
Risk-free interest rate | 1.43 | % |  | 1.55 | % |  | 1.52 | %
Expected volatility | 38.2 | % |  | 43.3 | % |  | 46.5 | %
Expected life (in years) | 4.18 |  |  | 4.17 |  |  | 4.21 |
Forfeiture rate | 5.00 | % |  | 5.00 | % |  | 5.00 | %
Dividend yield | 0 | % |  | 0 | % |  | 0 | %
Schedule of share-based compensation, stock options, activity | The changes in outstanding stock options for the year ended December 31, 2016 are as follows:
| Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (in Years) |  | Aggregate Intrinsic Value
Outstanding at December 31, 2015 | 1,177 |  |  | $ | 11.60 |  |  |  |  |
Granted | 75 |  |  | $ | 8.90 |  |  |  |  |
Exercised | (269 | ) |  | $ | 9.06 |  |  |  |  |
Expired, canceled or forfeited | (297 | ) |  | $ | 13.68 |  |  |  |  |
Outstanding at December 31, 2016 | 686 |  |  | $ | 11.41 |  |  | 2.23 |  | $ | 681 |
Exercisable at December 31, 2016 | 379 |  |  | $ | 11.39 |  |  | 1.50 |  | $ | 382 |
Options vested or expected to vest at December 31, 2016 | 674 |  |  | $ | 11.42 |  |  | 2.04 |  | $ | 662 |
Schedule of share-based compensation, activity | Restricted stock activity under the 2006 Plan and the 2016 Plan for 2016 is as follows:
| Number of Shares |  | Weighted- average grant date fair value
Outstanding at December 31, 2015, unvested | 458 |  |  | $ | 13.22 |
Granted | 424 |  |  | 8.68 |
Vested | (186 | ) |  | 12.82 |
Forfeited | (52 | ) |  | 10.39 |
Outstanding at December 31, 2016, unvested | 644 |  |  | $ | 10.58 |

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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + 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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- References No definition available. + Details
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