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Stock-Based Compensation (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Stock-Based Compensation [Abstract] |  |  |
Stock option expense | $ 959 | $ 746 | $ 556
Restricted stock grant expense | 299 | 286 | 203
Total stock-based compensation expense | $ 1,258 | $ 1,032 | $ 759

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- Definition Represents the value for amortization of deferred compensation on restricted stock. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of cost (reversal of cost) for employee benefits and share-based payment arrangement. Includes, but is not limited to, pension, other postretirement, postemployment and termination benefits. + References No definition available. + Details
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- Definition The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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