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Long-Term Compensation Plan and Stock Based Compensation - Allocation of Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2018 | Mar. 31, 2018 | Sep. 30, 2019
Plan information |  |  |  |  |
Restricted stock awards | $ 677 | $ 552 | $ 1,009 | $ 799 |
Restricted Stock, subject to future performance criteria |  |  |  |  |
Plan information |  |  |  |  |
Unissued shares |  |  |  |  | 248
Stock based compensation awards issued shares |  |  |  |  | 137
Restricted Stock, subject to performance criteria |  |  |  |  |
Plan information |  |  |  |  |
Unissued shares |  |  |  |  | 248
Restricted stock awards |  |  |  |  | $ 3,600
Vesting period (in years) |  |  |  |  | 3 years
2019 Omnibus Incentive Plan | Restricted Stock [Member] |  |  |  |  |
Plan information |  |  |  |  |
Stock based compensation Awards |  |  |  |  | 385
Restricted stock awards |  |  |  |  | $ 2,000
2019 Omnibus Incentive Plan | Restricted Stock [Member] | Minimum |  |  |  |  |
Plan information |  |  |  |  |
Vesting period (in years) |  |  |  |  | 1 year
2019 Omnibus Incentive Plan | Restricted Stock [Member] | Maximum |  |  |  |  |
Plan information |  |  |  |  |
Vesting period (in years) |  |  |  |  | 4 years
2019 Omnibus Incentive Plan | Restricted Stock, subject to time-based criteria |  |  |  |  |
Plan information |  |  |  |  |
Stock based compensation awards issued shares |  |  |  |  | 137

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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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