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Stock-Based Incentive Plans Nonvested Restricted Stock Units (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award |  |
Share-based Awards, Restricted Stock Units, Vested Oustanding | 60,000 |
Share-based Compensation Arrangement Restricted Stock Units, Nonvested | 2,000 | 14,000
Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Nonvested, Weighted Average Grant Date Fair Value | $ 16.72 | $ 16.27
Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Grants in Period | (12,000) |
Granted | 0 |
Nonvested at December 31, 2016 | 123,000 | 333,000
Granted, weighted average grant date fair value | $ 0.00 |
Vested, weighted average grant date fair value | 16.18 |
Nonvested, weighted average grant date fair value at December 31, 2016 | 4.77 | $ 8.90
Vested outstanding, weighted average grant date fair value | $ 15.38 |

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- Definition Share-based Awards, Restricted Stock Units, Vested Oustanding + References No definition available. + Details
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- Definition Share-based Compensation Arrangement Restricted Stock Units, Nonvested + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Nonvested, Weighted Average Grant Date Fair Value + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Vested During Period + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Vested in Period, Weighted Average Grant Date Fair Value + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Weighted Average Grant Date Fair Value + References No definition available. + 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://www.xbrl.org/2003/role/presentationRef -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=6415400&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://www.xbrl.org/2003/role/presentationRef -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=6415400&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://www.xbrl.org/2003/role/presentationRef -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=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6415400&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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