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Stock Compensation (Narrative) (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 28, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Capitalized stock compensation expense |  | $ 115,000 | $ 160,000 | $ 424,000 | $ 456,000
ESPP Options [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
ESPP, percentage of market price for eligible employees |  |  |  | 85.00% |
Employees purchased common stock, shares |  | 51,000 | 54,000 | 87,000 | 84,000
RSAs, RSUs, And PSUs [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Authorized awards from approved stock incentive plans |  |  |  | 494,000 | 330,000
Aggregate grant date market value |  |  |  | $ 12,500,000 | $ 8,200,000
Performance Stock Units (PSUs) [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Compensation expense |  |  |  | $ 1,200,000 |
Maximum [Member] | Short-term PSUs [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of target number of shares of common stock granted as Performance Stock Units | 100.00% |  |  |  |
Officers [Member] | Stock Options [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Grants of stock options |  |  |  | 226,000 | 212,000

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