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Stock-Based Compensation and Other Benefit Plans (Summary of Non Vested Awards) (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jun. 06, 2019 | May 10, 2019 | Apr. 01, 2019 | Feb. 28, 2019 | Feb. 28, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Unvested awards forfeited |  |  |  |  |  | (541,000) |
Weighted Average Grant Price, Unvested awards forfeited |  |  |  |  |  | $ 1.41 |
Restricted Stock [Member] |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Outstanding at January 1, 2019 |  |  |  |  |  | 507,000 |
Awards granted | 111,888 |  | 22,926 | 174,464 | 323,474 | 309,000 |
Awards vested |  |  |  |  |  | (307,000) |
Unvested awards forfeited |  |  |  |  |  | (166,000) |
Outstanding at September 30, 2019 |  |  |  |  |  | 343,000 | 507,000
Weighted Average Grant Price, Outstanding at January 1, 2019 |  |  |  |  |  | $ 0.91 |
Weighted Average Grant Price, Awards granted | $ 1.43 |  | $ 2.29 | $ 2.33 | $ 0.86 | 2.00 |
Weighted Average Grant Price, Awards vested |  |  |  |  |  | 1.12 |
Weighted Average Grant Price, Unvested awards forfeited |  |  |  |  |  | 1.29 |
Weighted Average Grant Price, Outstanding at September 30, 2019 |  |  |  |  |  | $ 1.52 | $ 0.91
Stock Appreciation Rights (SARs) [Member] |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Outstanding at January 1, 2019 |  |  |  |  |  | 3,369,000 |
Awards granted |  | 196,892 |  | 951,699 | 2,373,411 | 1,148,000 | 1,049,528
Awards exercised |  |  |  |  |  | (558,000) |
Outstanding at September 30, 2019 |  |  |  |  |  | 3,418,000 | 3,369,000
Exercisable at September 30, 2019 |  |  |  |  |  | 952,000 |
Weighted Average Grant Price, Awards granted |  | $ 1.72 |  | $ 2.33 | $ 0.86 |  | $ 1.20
Weighted Average Grant Price, Awards exercised |  |  |  |  |  | $ 1.04 |
Weighted Average Exercise Price Per Share, Exercisable at September 30, 2019 |  |  |  |  |  | 0.99 |
Weighted Average Exercise Price Per Share, Granted |  |  |  |  |  | 2.23 |
Weighted Average Exercise Price Per Share, Outstanding at December 31, 2017 |  |  |  |  |  | $ 1.30 | $ 0.96
Term (in years), Outstanding at September 30, 2019 |  |  |  |  |  | 3 years 2 months 15 days |
Term (in years), Exercisable at September 30, 2019 |  |  |  |  |  | 2 years 6 months 21 days |
Aggregate Intrinsic Value, Outstanding at September 30, 2019 |  |  |  |  |  | $ 3,240 |
Aggregate Intrinsic Value, Exercisable at September 30, 2019 |  |  |  |  |  | $ 1,173 |

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + 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 (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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 (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + 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 (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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 (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + 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 (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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