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Stock-Based Compensation and Stock Options (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Weighted-Average Assumptions used in Black-Scholes Option Pricing Model | The fair value of 2018, 2017 and 2016 stock options was estimated using the Black-Scholes option pricing model with the following weighted-average assumptions:
| 2018 |  | 2017 |  | 2016
Weighted-average fair value of options granted per share | $ | 6.63 |  |  | $ | 3.11 |  |  | $ | 4.73 |
Historical volatility | 46 | % |  | 46 | % |  | 58 | %
Risk-free interest rate | 2.84 | % |  | 2.06 | % |  | 1.38 | %
Dividend yield | — |  |  | — |  |  | — |
Expected life in years | 5.70 |  |  | 5.65 |  |  | 6.25 |
Schedule of Option Activity | Option activities during the years ended December 31, 2016, 2017, and 2018 were as follows:
| Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Life |  | Aggregate Intrinsic Value
|  |  |  |  |  |  | (In thousands)
Outstanding at January 1, 2016 | 775,000 |  |  | $ | 12.78 |  |  | 5.53 years |  | $ | 120 |
Option Granted | 150,000 |  |  | $ | 8.55 |  |  |  |  |
Options forfeited and canceled | (325,000 | ) |  | $ | 16.09 |  |  |  |  |
Outstanding at December 31, 2016 | 600,000 |  |  | $ | 9.93 |  |  | 8.55 years |  | $ | — |
Option Granted | 400,000 |  |  | $ | 6.95 |  |  |  |  |  |
Options forfeited and canceled | (50,000 | ) |  | $ | 8.55 |  |  |  |  |
Outstanding at December 31, 2017 | 950,000 |  |  | $ | 8.75 |  |  | 8.48 years |  | $ | — |
Option Granted | 250,000 |  |  | $ | 15.47 |  |  |  |  |
Options forfeited and canceled | (150,000 | ) |  | $ | 14.68 |  |  | 0 |  | $ | — |
Outstanding at December 31, 2018 | 1,050,000 |  |  | $ | 9.50 |  |  | 7.53 years |  | $ | 1,920 |
Exercisable and fully vested at December 31, 2018 | 716,667 |  |  | $ | 9.31 |  |  | 7.16 years |  | $ | 1,344 |
Outstanding at December 31, 2018 and expected to vest thereafter | 333,333 |  |  | $ | 9.92 |  |  | 8.31 years |  | $ | 576 |
Schedule of Outstanding Options | Outstanding options at December 31, 2018 were as follows:
Exercise Price |  | Shares Outstanding |  | Options Outstanding Weighted-Average Remaining Contractual Life |  | Weighted-Average Exercise Price |  | Shares Outstanding and Exercisable |  | Options Exercisable Weighted-Average Remaining Contractual Life
$ | 28.98 |  |  | 50,000 |  |  | 3.07 years |  | $ | 28.98 |  |  | 50,000 |  |  | 3.07 years
$ | 8.07 |  |  | 400,000 |  |  | 6.75 years |  | $ | 8.07 |  |  | 400,000 |  |  | 6.75 years
$ | 8.55 |  |  | 50,000 |  |  | 7.19 years |  | $ | 8.55 |  |  | 50,000 |  |  | 7.19 years
$ | 6.95 |  |  | 400,000 |  |  | 8.84 years |  | $ | 6.95 |  |  | 200,000 |  |  | 8.84 years
$ | 10.50 |  |  | 50,000 |  |  | 9.32 years |  | $ | 10.50 |  |  | 16,667 |  |  | 9.32 years
$ | 14.70 |  |  | 50,000 |  |  | 9.37 years |  | $ | 14.70 |  |  | — |  |  | 9.37 years
$ | 16.65 |  |  | 50,000 |  |  | 4.47 years |  | $ | 16.65 |  |  | — |  |  | 4.47 years

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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