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Stock-Based Compensation (Summary of Unvested Stock Options) (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Shares |  |  |
Unvested, beginning of period (in shares) | 48,581 |  |
Granted (in shares) | 0 | 32,750 | 0
Vested (in shares) | (26,549) |  |
Canceled/Forfeited (in shares) | (1,167) |  |
Unvested, end of period (in shares) | 20,865 | 48,581 |
Weighted Average Grant Date Fair Value |  |  |
Unvested, beginning of period (in dollars per share) | $ 11.41 |  |
Granted (in dollars per share) | 0 | $ 11.93 |
Vested (in dollars per share) | 10.97 |  |
Canceled/Forfeited (in dollars per share) | 11.93 |  |
Unvested, end of period (in dollars per share) | $ 11.93 | $ 11.41 |

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- Definition Employee Service Share-based Compensation, Nonvested Awards, Forfeited in Period, Stock Options, Weighted Average Grant Date Fair Value + References No definition available. + Details
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- Definition Employee Service Share-based Compensation, Nonvested Awards, Outstanding, Stock Options, Weighted Average Grant Date Fair Value + 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://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=109197908&loc=d3e5070-113901 + Details
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