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Stock-Based Compensation (Non-Vested Employee Stock Options) (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Option Shares, Granted | 0 |  |
Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Option Shares, Nonvested at beginning of period | 335,000 | 682,500 | 1,023,750
Option Shares, Granted | 0 | 0 | 0
Option Shares, Vested | (331,250) | (335,000) | (341,250)
Option Shares, Forfeited | (3,750) | (12,500) | 0
Option Shares, Nonvested at end of period | 0 | 335,000 | 682,500
Nonvested, Weighted Average Grant Date Fair Value beginning of period | $ 2.55 | $ 2.55 | $ 2.62
Granted, Weighted Average Grant Date Fair Value | 0.00 | 0.00 | 0.00
Vested, Weighted Average Grant Date Fair Value | 2.55 | 2.55 | 2.55
Forfeited, Weighted Average Grant Date Fair Value | 2.55 | 2.55 | 0.00
Nonvested, Weighted Average Grant Date Fair Value end of period | $ 0.00 | $ 2.55 | $ 2.55

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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 Gross number of share options (or share units) granted during the period. + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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- Definition Number of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options outstanding. + References No definition available. + Details
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- Definition Number of options vested. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of options vested. + References No definition available. + Details
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- Details
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