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Stock-Based Compensation (Stock Option Grants) (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Time-Vested Stock Options [Member] | 1/12/2018 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grant Year |  | 2018 |
Grant Date |  | Jan. 12, 2018 |
Expected Life |  | 6 years |
Expected Volatility |  | 44.25% |
Expected Dividend Yield |  | 0.00% |
Risk Free Interest Rate |  | 2.42% |
Weighted-average grant-date fair value |  | $ 7.57 |
Time-Vested Stock Options [Member] | 4/23/2019 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grant Year | 2019 |  |
Grant Date | Apr. 23, 2019 |  |
Expected Life | 6 years |  |
Expected Volatility | 44.87% |  |
Expected Dividend Yield | 0.00% |  |
Risk Free Interest Rate | 2.40% |  |
Weighted-average grant-date fair value | $ 3.50 |  |
Time-Vested Stock Options [Member] | 1/14/2019 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grant Year | 2019 |  |
Grant Date | Jan. 14, 2019 |  |
Expected Life | 6 years |  |
Expected Volatility | 44.87% |  |
Expected Dividend Yield | 0.00% |  |
Risk Free Interest Rate | 2.57% |  |
Weighted-average grant-date fair value | $ 3.43 |  |
Performance Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected Life | 10 years |  |
Performance Stock Options [Member] | 1/12/2018 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grant Year |  | 2018 |
Grant Date |  | Jan. 12, 2018 |
Expected Volatility |  | 49.33% |
Expected Dividend Yield |  | 0.00% |
Risk Free Interest Rate |  | 2.55% |
Performance Stock Options [Member] | 7/31/2017 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grant Year |  |  | 2017
Grant Date |  |  | Jul. 31, 2017
Expected Volatility |  |  | 49.22%
Expected Dividend Yield |  |  | 2.19%
Risk Free Interest Rate |  |  | 2.30%
Minimum [Member] | Performance Stock Options [Member] | 1/12/2018 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected Life |  | 1 year |
Weighted-average grant-date fair value |  | $ 8.51 |
Minimum [Member] | Performance Stock Options [Member] | 7/31/2017 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected Life |  |  | 11 months 23 days
Weighted-average grant-date fair value |  |  | $ 6.88
Maximum [Member] | Performance Stock Options [Member] | 1/12/2018 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected Life |  | 2 years 5 months 5 days |
Weighted-average grant-date fair value |  | $ 9.12 |
Maximum [Member] | Performance Stock Options [Member] | 7/31/2017 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected Life |  |  | 2 years 4 months 21 days
Weighted-average grant-date fair value |  |  | $ 7.25

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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 (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the 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 (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + 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 (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents 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 (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.2) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 + Details
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