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STOCKHOLDERS' EQUITY (Tables) | 6 Months Ended
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Jun. 30, 2022
STOCKHOLDERS' EQUITY |
Summary of shares subject to outstanding awards | The following details the shares subject to awards that are outstanding under the Plans as of June 30, 2022:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2022 | ​ | 2019 | ​ | 2016
​ |  | Incentive Plan (a) |  | Incentive Plan (b) |  | Incentive Plan (b)
Restricted stock | ​ | — | ​ | 437,375 | ​ | 275,000
RSUs | ​ | — | ​ | 155,726 | ​ | —
Totals | ​ | — | ​ | 593,101 | ​ | 275,000
_________________
(a) | This plan was approved by Company’s stockholders in June 2022; no shares have been issued as of June 30, 2022. As of July 2022, the Company is deemed to have granted RSUs to acquire 85,350 shares of common stock.
(b) | No additional awards may be granted under such plan.
Summary of RSU activity and other material terms and conditions | The following table reflects the activities involving RSUs:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2022 (a) | ​ | 2021 | ​ | 2020 | ​ | 2019 | ​ | 2018 | ​
RSUs granted (b) | ​ | 85,350 | ​ | 80,700 | ​ | 75,026 | ​ | 77,776 | ​ | 76,250 | ​
RSUs vested | ​ | — | ​ | — | ​ | — | ​ | 64,488 | (c) | 73,750 | (d)
RSUs forfeited (e) | ​ | — | ​ | — | ​ | — | ​ | 13,288 | ​ | 2,500 | ​
RSUs outstanding | ​ | 85,350 | ​ | 80,700 | ​ | 75,026 | ​ | — | ​ | — | ​
Vesting Date (f) (g) | ​ | 6/30/2025 | ​ | 6/30/2024 | ​ | 6/30/2023 | ​ | 6/30/2022 | ​ | 6/30/2021 | ​
_________________
(a) | For accounting purposes, these shares were granted in July 2022.
(b) | The shares underlying the RSUs are excluded from the shares shown as outstanding on the balance sheet until they have vested and been issued.
(c) | Such shares were issued in August 2022.
(d) | Such shares were issued in August 2021.
(e) | 10,538 shares of the 2019 grant were not earned in 2022 because the applicable market condition was only partially satisfied. During 2019, 2,750 shares of the 2019 grant and 2,500 shares of the 2018 grant were forfeited (see Note 10).
(f) | Generally, the recipient must maintain a relationship with the Company during the applicable three-year performance cycle.
(g) | RSUs vest upon satisfaction of metrics related to average annual total stockholder return ("TSR Metric") and average annual return on capital ("ROC Metric"; together with the TSR Metric, the "Metrics") and are issued after the Compensation Committee determines the Metrics with respect to the vesting of such shares have been satisified.
The specific metrics and other material terms and conditions of the RSUs are as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Year RSU Granted | ​ | Metric | ​ | Weight | ​ | Minimum Performance Criteria (a) | ​ | Maximum Performance Criteria (a)
2018 - 2020 (b) | ​ | ROC Metric (c) | ​ | 50% | ​ | Average of annual ROC of at least 7% | ​ | Average of annual ROC of at least 9.75%
​ | ​ | TSR Metric (d) | ​ | 50% | ​ | Average of annual TSR of at least 7% | ​ | Average of annual TSR of at least 12.0%
2021 - 2022 (e) (f) | ​ | ROC Metric (c) | ​ | 50% | ​ | Average of annual ROC of at least 6% | ​ | Average of annual ROC of at least 8.75%
​ | ​ | TSR Metric (d) | ​ | 50% | ​ | Average of annual TSR of at least 6% | ​ | Average of annual TSR of at least 11.0%
_________________
(a) | If the average annual ROC or TSR falls between the applicable minimum and maximum performance criteria, a pro-rata portion of such units, as applicable, vest.
(b) | Such RSUs are not entitled to voting or dividend rights.
(c) | The ROC Metrics meet the definition of a performance condition. Fair value is based on the market value on the date of grant and the performance assumptions are re-evaluated quarterly. The Company does not recognize expense on ROC Awards which it does not expect the performance conditions to be met.
(d) | The TSR Metrics meet the definition of a market condition. A third party appraiser prepares a Monte Carlo simulation pricing model to determine the fair value of such awards, which is recognized ratably over the three-year service period.
(e) | Such RSUs are (i) not entitled to voting rights and (ii) upon vesting, the holders receive an amount equal to the dividends that would have been paid on the underlying shares had such shares been outstanding during the three-year performance cycle.
(f) | The Company accrued dividend equivalents for the 2021 RSUs of $108,000, based on the number of shares that would have been issued, underlying such RSUs, using performance and market assumptions determined as of June 30, 2022.
Schedule of equity incentive plans | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended
​ | ​ | June 30, | ​ | June 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Restricted stock grants: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Number of shares | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 153,575 | ​ | ​ | 151,500
Average per share grant price | ​ | $ | — | ​ | $ | — | ​ | $ | 33.75 | ​ | $ | 20.34
Deferred compensation to be recognized over vesting period | ​ | $ | — | ​ | $ | — | ​ | $ | 5,183,000 | ​ | $ | 3,082,000
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Number of non-vested shares: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Non-vested beginning of period | ​ | ​ | 728,775 | ​ | ​ | 723,050 | ​ | ​ | 706,450 | ​ | ​ | 701,675
Grants | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 153,575 | ​ | ​ | 151,500
Vested during period | ​ | ​ | (16,150) | ​ | ​ | (15,800) | ​ | ​ | (146,900) | ​ | ​ | (145,725)
Forfeitures | ​ | ​ | (250) | ​ | ​ | (200) | ​ | ​ | (750) | ​ | ​ | (400)
Non-vested end of period | ​ | ​ | 712,375 | ​ | ​ | 707,050 | ​ | ​ | 712,375 | ​ | ​ | 707,050
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
RSU grants: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Number of underlying shares | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Average per share grant price | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | —
Deferred compensation to be recognized over vesting period | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Number of non-vested shares: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Non-vested beginning of period | ​ | ​ | 230,752 | ​ | ​ | 223,802 | ​ | ​ | 230,752 | ​ | ​ | 223,802
Grants | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Vested during period | ​ | ​ | (64,488) | ​ | ​ | (73,750) | ​ | ​ | (64,488) | ​ | ​ | (73,750)
Forfeitures | ​ | ​ | (10,538) | ​ | ​ | — | ​ | ​ | (10,538) | ​ | ​ | —
Non-vested end of period | ​ | ​ | 155,726 | ​ | ​ | 150,052 | ​ | ​ | 155,726 | ​ | ​ | 150,052
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Restricted stock and RSU grants (based on grant price): | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average per share value of non-vested shares | ​ | $ | 26.25 | ​ | $ | 24.53 | ​ | $ | 26.25 | ​ | $ | 24.53
Value of stock vested during the period | ​ | $ | 2,299,000 | ​ | $ | 2,340,000 | ​ | $ | 5,535,000 | ​ | $ | 5,165,000
Weighted average per share value of shares forfeited during the period | ​ | $ | 28.91 | ​ | $ | 24.86 | ​ | $ | 29.12 | ​ | $ | 24.24
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total charge to operations: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding restricted stock grants | ​ | $ | 1,197,000 | ​ | $ | 1,092,000 | ​ | $ | 2,154,000 | ​ | $ | 1,989,000
Outstanding RSUs | ​ | ​ | 362,000 | ​ | ​ | 593,000 | ​ | ​ | 730,000 | ​ | ​ | 1,039,000
Total charge to operations | ​ | $ | 1,559,000 | ​ | $ | 1,685,000 | ​ | $ | 2,884,000 | ​ | $ | 3,028,000

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