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Stock-Based Compensation (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014
Summary of options outstanding by exercise price range |  |
Options Exercisable, Weighted Average Exercise Price | $ 1.24 | $ 3.14
Stock Options [Member] |  |
Summary of options outstanding by exercise price range |  |
Options Outstanding, Number Outstanding at 12/31/15 | 2,184,117 |
Options Outstanding, Weighted Average Remaining Contractual Life (years) | 3 years 7 months 24 days |
Options Outstanding, Weighted Average Exercise Price | $ 4.48 |
Options Exercisable, Number Exercisable at 12/31/15 | 1,888,436 |
Options Exercisable, Weighted Average Exercise Price | $ 4.63 |
Stock Options [Member] | Range one [Member] |  |
Summary of options outstanding by exercise price range |  |
Range of Exercise Price, Lower Range Limit | 2.08 |
Range of Exercise Price, Upper Range Limit | $ 3.50 |
Options Outstanding, Number Outstanding at 12/31/15 | 296,450 |
Options Outstanding, Weighted Average Remaining Contractual Life (years) | 6 years 1 month 6 days |
Options Outstanding, Weighted Average Exercise Price | $ 2.98 |
Options Exercisable, Number Exercisable at 12/31/15 | 62,717 |
Options Exercisable, Weighted Average Exercise Price | $ 2.95 |
Stock Options [Member] | Range two [Member] |  |
Summary of options outstanding by exercise price range |  |
Range of Exercise Price, Lower Range Limit | 3.51 |
Range of Exercise Price, Upper Range Limit | $ 5.00 |
Options Outstanding, Number Outstanding at 12/31/15 | 1,516,000 |
Options Outstanding, Weighted Average Remaining Contractual Life (years) | 3 years 1 month 28 days |
Options Outstanding, Weighted Average Exercise Price | $ 4.22 |
Options Exercisable, Number Exercisable at 12/31/15 | 1,501,000 |
Options Exercisable, Weighted Average Exercise Price | $ 4.23 |
Stock Options [Member] | Range three [Member] |  |
Summary of options outstanding by exercise price range |  |
Range of Exercise Price, Lower Range Limit | 5.01 |
Range of Exercise Price, Upper Range Limit | $ 6.50 |
Options Outstanding, Number Outstanding at 12/31/15 | 201,667 |
Options Outstanding, Weighted Average Remaining Contractual Life (years) | 4 years 6 months 11 days |
Options Outstanding, Weighted Average Exercise Price | $ 5.84 |
Options Exercisable, Number Exercisable at 12/31/15 | 161,385 |
Options Exercisable, Weighted Average Exercise Price | $ 5.81 |
Stock Options [Member] | Range four [Member] |  |
Summary of options outstanding by exercise price range |  |
Range of Exercise Price, Lower Range Limit | 6.51 |
Range of Exercise Price, Upper Range Limit | $ 8.21 |
Options Outstanding, Number Outstanding at 12/31/15 | 170,000 |
Options Outstanding, Weighted Average Remaining Contractual Life (years) | 2 years 9 months 18 days |
Options Outstanding, Weighted Average Exercise Price | $ 7.83 |
Options Exercisable, Number Exercisable at 12/31/15 | 163,334 |
Options Exercisable, Weighted Average Exercise Price | $ 7.84 |

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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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