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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock Option Activities of Long-Term Incentive and Option Plans | The following information relates to our long-term incentive plans:
|  | December 31, 2018 |
|  | 2016 Plan |  |  | 2008 Plan |
Maximum number of securities for issuance |  |  | 2,750,000 |  |  |  |  |
Number of awards available to be granted (1) |  |  | 1,825,150 |  |  |  |  |
Number of unvested restricted stock/restricted stock units outstanding |  |  | 597,533 |  |  |  | 210,266 |
Number of options outstanding |  |  | — |  |  |  | 124,000 |
Number of options exercisable |  |  | — |  |  |  | 100,620 |
| (1) | Includes 2008 Plan shares canceled, forfeited, expired unexercised, which became available for reissuance under the 2016 Plan after the effective date of the 2016 Plan.
|  | 2018 |
|  | Shares |  |  | Weighted-Average Exercise Price |
Outstanding at beginning of year |  |  | 206,210 |  |  | $ | 30.34 |
Granted |  |  | — |  |  | $ | — |
Exercised |  |  | (2,525 | ) |  | $ | 7.86 |
Forfeited or expired |  |  | (79,685 | ) |  | $ | 25.59 |
Outstanding at end of year |  |  | 124,000 |  |  | $ | 33.86 |
Exercisable at end of year |  |  | 100,620 |  |  | $ | 33.97 |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Total intrinsic value of options exercised during the year |  | $ | — |  |  | $ | — |  |  | $ | 216,000 |
Total fair value of options vested during the year |  | $ | 169,000 |  |  | $ | 451,000 |  |  | $ | 469,000 |
Summary of Restricted Stock Activity | A summary of restricted stock activity during 2018 is presented below:
|  | Restricted Stocks |  |  | Restricted Stock Units |
|  | Shares |  |  | Weighted-Average Grant Date Fair Value |  |  | Shares |  |  | Weighted-Average Grant Date Fair Value |
Unvested restricted stock outstanding at beginning of year |  |  | 1,189,473 |  |  | $ | 7.51 |  |  |  | 43,764 |  |  | $ | 11.42 |
Granted |  |  | 369,350 |  |  | $ | 5.47 |  |  |  | 35,511 |  |  | $ | 5.28 |
Vested |  |  | (806,927 | ) |  | $ | 9.11 |  |  |  | (10,941 | ) |  | $ | 11.42 |
Cancelled or forfeited |  |  | (12,431 | ) |  | $ | 6.20 |  |  |  | — |  |  | $ | — |
Unvested restricted stock outstanding at end of year |  |  | 739,465 |  |  | $ | 7.79 |  |  |  | 68,334 |  |  | $ | 8.23 |
|  | Restricted Stock |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Shares of restricted stock granted |  |  | 369,350 |  |  |  | 469,465 |  |  |  | 850,771 |
Total fair value of restricted stock granted |  | $ | 2,019,000 |  |  | $ | 4,277,000 |  |  | $ | 6,652,000 |
Weighted-average fair value per restricted stock granted during year |  | $ | 5.47 |  |  | $ | 9.11 |  |  | $ | 7.82 |
Stock-based compensation expense - Cost of sales |  | $ | 385,000 |  |  | $ | 312,000 |  |  | $ | 240,000 |
Stock-based compensation expense - SG&A (1) |  | $ | 7,574,000 |  |  | $ | 3,987,000 |  |  | $ | 2,773,000 |
Income tax benefit |  | $ | (398,000 | ) |  | $ | (1,659,000 | ) |  | $ | (1,157,000 | )
Total weighted-average remaining vesting period in years |  |  | 1.78 |  |  |  | 1.95 |  |  |  | 2.41 |
Total fair value of restricted stock vested during the year |  | $ | 7,355,000 |  |  | $ | 3,124,000 |  |  | $ | 2,579,000 |
| (1) | See Note 15-Related Party Transactions.
|  | Restricted Stock Units |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Shares of restricted stock units granted |  |  | 35,511 |  |  |  | 37,992 |  |  |  | 27,654 |
Total fair value of restricted stock unit granted |  | $ | 187,000 |  |  | $ | 375,000 |  |  | $ | 375,000 |
Weighted-average fair value per restricted stock unit granted during year |  | $ | 5.28 |  |  | $ | 9.87 |  |  | $ | 13.56 |
Stock-based compensation expense - SG&A |  | $ | 187,000 |  |  | $ | 375,000 |  |  | $ | 375,000 |
Income tax benefit |  | $ | (34,000 | ) |  | $ | (115,000 | ) |  | $ | (144,000 | )
Total weighted-average remaining vesting period in years |  |  | 1.75 |  |  |  | 3.05 |  |  |  | 2.50 |
Total fair value of restricted stock vested during the year |  | $ | 125,000 |  |  | $ | 250,000 |  |  | $ | — |
Valuation Assumptions of Granted Stock Options | The following table summarizes information about these granted stock options:
|  | 2018 |  |  | 2017 |  |  | 2016 |
Total weighted-average remaining vesting period in years |  |  | 1.05 |  |  |  | 1.53 |  |  |  | 2.25 |
Stock-based compensation expense - Cost of Sales |  | $ | 141,000 |  |  | $ | 317,000 |  |  | $ | 321,000 |
Stock-based compensation expense - SG&A |  | $ | 71,000 |  |  | $ | 108,000 |  |  | $ | 836,000 |
Income tax benefit |  | $ | (54,000 | ) |  | $ | (164,000 | ) |  | $ | (444,000 | )
Stock Options Outstanding and Exercisable |
|  |  |  |  |  |  |  | Stock Options Outstanding At December 31, 2018 |
Exercise Prices |  |  | Shares Outstanding |  |  | Weighted- Average Remaining Contractual Life in Years |  |  | Weighted- Average Exercise Price |  |  | Intrinsic Value of Shares Outstanding |
$ 33.36 |  |  |  | 70,000 |  |  |  | 3.34 |  |  | $ | 18.83 |  |  |  | — |
$ 34.50 |  |  |  | 54,000 |  |  |  | 1.27 |  |  | $ | 15.02 |  |  |  | — |
$ | 33.36 |  | - | $ | 34.50 |  |  |  | 124,000 |  |  |  | 4.61 |  |  | $ | 33.85 |  |  | $ | — |
|  |  |  |  |  |  |  | Stock Options Exercisable At December 31, 2018 |
Exercise Prices |  |  | Shares Outstanding |  |  | Weighted- Average Remaining Contractual Life in Years |  |  | Weighted- Average Exercise Price |  |  | Intrinsic Value of Shares Outstanding |
$ 33.36 |  |  |  | 46,620 |  |  |  | 2.74 |  |  | $ | 15.46 |  |  |  | — |
$ 34.50 |  |  |  | 54,000 |  |  |  | 1.57 |  |  | $ | 18.52 |  |  |  | — |
$ | 33.36 |  | - | $ | 34.50 |  |  |  | 100,620 |  |  |  | 4.31 |  |  | $ | 33.98 |  |  | $ | — |

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