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CAPITAL STOCK (Tables) | 12 Months Ended
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Dec. 31, 2019
Equity [Abstract] |
Cash Dividends Declared | Dividends were declared in 2019 and 2018 as follows:
Dividend per share |  | Date declared |  | Date of record |  | Payment date
$0.0425 |  |  | March 8, 2018 |  | May 1, 2018 |  | May 15, 2018
$0.0425 |  |  | June 28, 2018 |  | August 1, 2018 |  | August 15, 2018
$0.0425 |  |  | July 31, 2018 |  | November 1, 2018 |  | November 15, 2018
$0.0425 |  |  | November 7, 2018 |  | February 1, 2019 |  | February 15, 2019
$0.0425 |  |  | March 12, 2019 |  | May 1, 2019 |  | May 15, 2019
$0.0425 |  |  | June 27, 2019 |  | August 1, 2019 |  | August 15, 2019
$0.0425 |  |  | August 6, 2019 |  | November 1, 2019 |  | November 15, 2019
$0.0425 |  |  | November 7, 2019 |  | January 31, 2020 |  | February 14, 2020
Summary of Stock Option Activity and Related Information | A summary of the Company’s stock option activity and related information for the three years ended December 31, 2019, is as follows:
| Options |  | Weighted- average exercise price |  | Weighted- average remaining contractual life (years) |  | Aggregate intrinsic value
Options outstanding at December 31, 2016 | 1,775,400 |  |  | $ | 13.44 |  |  |  |  |
Grants | 125,750 |  |  | 17.38 |  |  |  |  |
Exercises | (300,000) |  |  | 11.34 |  |  |  |  |
Cancellations | (45,700) |  |  | 16.40 |  |  |  |  |
Expirations | (99,250) |  |  | 20.40 |  |  |  |  |
Options outstanding at December 31, 2017 | 1,456,200 |  |  | 13.64 |  |  |  |  |
Grants | 205,750 |  |  | 13.56 |  |  |  |  |
Exercises | (58,000) |  |  | 4.93 |  |  |  |  |
Cancellations | (22,375) |  |  | 16.95 |  |  |  |  |
Expirations | (32,750) |  |  | 15.50 |  |  |  |  |
Options outstanding at December 31, 2018 | 1,548,825 |  |  | 13.87 |  |  |  |  |
Grants | 296,500 |  |  | 9.21 |  |  |  |  |
Exercises | (75,000) |  |  | 4.28 |  |  |  |  |
Cancellations | (19,625) |  |  | 12.94 |  |  |  |  |
Expirations | (242,375) |  |  | 13.95 |  |  |  |  |
Options outstanding at December 31, 2019 | 1,508,325 |  |  | 13.43 |  |  | 4.9 |  | $ | — |
Options exercisable at December 31, 2019 | 1,065,422 |  |  | $ | 14.48 |  |  | 3.1 |  | $ | — |
Fair Value Stock Options at Grant Date using Weighted Average Assumption | The fair values for these stock options were estimated at the dates of grant using the following weighted-average assumptions:
| 2019 |  | 2018 |  | 2017
Historical volatility | 35 | % |  | 34 | % |  | 39 | %
Expected term (years) | 6.0 |  | 6.0 |  | 6.0
Risk-free interest rate | 1.82 | % |  | 2.72 | % |  | 1.97 | %
Expected dividend yield | 1.80 | % |  | 1.22 | % |  | 0.98 | %
Summary of Restricted Stock Activity | A summary of the Company’s restricted stock activity and related information for the three years ended December 31, 2019 is as follows:
| Restricted Shares |  | Weighted- average grant date fair value
Non-vested restricted shares, December 31, 2016 | 161,824 |  |  | $ | 15.35 |
Grants | 133,352 |  |  | 18.32 |
Vested | (69,795) |  |  | 15.39 |
Cancellations | (6,064) |  |  | 16.07 |
Non-vested restricted shares, December 31, 2017 | 219,317 |  |  | 17.12 |
Grants | 223,884 |  |  | 13.25 |
Vested | (90,926) |  |  | 17.14 |
Cancellations | (25,730) |  |  | 14.96 |
Non-vested restricted shares, December 31, 2018 | 326,545 |  |  | 14.63 |
Grants | 439,747 |  |  | 9.25 |
Vested | (148,414) |  |  | 14.54 |
Cancellations | (24,537) |  |  | 13.97 |
Non-vested restricted shares, December 31, 2019 | 593,341 |  |  | $ | 10.70 |
Total unrecognized compensation expense remaining (in thousands) | $ | 4,199 |  |  |
Weighted-average years expected to be recognized over | 1.6 |  |
Summary of Performance-based Award Activity | A summary of the Company’s performance-based award activity and related information for the three years ended December 31, 2019 is as follows:
| Performance - based awards (1) |  | Weighted- average grant date fair value
Non-vested performance-based awards, December 31, 2016 | 145,962 |  |  | $ | 15.32 |
Grants | 87,000 |  |  | 18.45 |
Cancellations | (4,070) |  |  | 16.52 |
Non-vested performance-based awards, December 31, 2017 | 228,892 |  |  | 16.49 |
Grants | 182,300 |  |  | 12.81 |
Vested | (58,888) |  |  | 14.84 |
Cancellations | (13,017) |  |  | 15.95 |
Non-vested performance-based awards, December 31, 2018 | 339,287 |  |  | 14.82 |
Grants | 158,525 |  |  | 9.19 |
Vested | (66,761) |  |  | 15.69 |
Cancellations | (25,992) |  |  | 15.44 |
Non-vested performance-based awards, December 31, 2019 | 405,059 |  |  | $ | 12.43 |
Total unrecognized compensation expense remaining (in thousands) | $ | 1,845 |  |  |
Weighted-average years expected to be recognized over | 1.6 |  |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs | The Company recorded stock compensation expense as follows (in thousands):
| Year Ended December 31, |  |  |  |
Stock Compensation Expense Components | 2019 |  | 2018 |  | 2017
Equity based stock option expense | $ | 617 |  |  | $ | 691 |  |  | $ | 1,090 |
Restricted and performance-based stock awards expense | 4,404 |  |  |  | 3,400 |  |  |  | 2,300 |
Stock compensation expense for equity based awards | $ | 5,021 |  |  | $ | 4,091 |  |  | $ | 3,390 |
Liability based stock option expense | 20 |  |  |  | 44 |  |  |  | — |
Total Stock Compensation Expense | $ | 5,041 |  |  | $ | 4,135 |  |  | $ | 3,390 |

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