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Net Income Per Share Net Income Per Share (Schedule of Securities Excluded from Net Income Per Share) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Options excluded from diluted net income per share | 375,000 | 75,000 | 490,000 | 75,000
Restricted Stock or Unit Expense |  |  | $ 0.1 | $ 0.1
Exercise price of excluded options |  | $ 5.62 |  | $ 5.62
Minimum [Member] |  |  |  |
Exercise price of excluded options | $ 3.90 |  | $ 2.68 |
Maximum [Member] |  |  |  |
Exercise price of excluded options | $ 5.62 |  | $ 5.62 |

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- Definition Exercise price of the option. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Footnote 5 + Details
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- Definition Options with exercise price greater than market price + References No definition available. + Details
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- Definition The noncash expense that represents the cost of restricted stock or unit 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=66902209&loc=d3e3602-108585 + Details
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- Details
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