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Stock-Based Compensation (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Jan. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unrecognized compensation cost expected to be recognized over weighted average period (in years) | 1 year 8 months 5 days |
Director [Member] | Non-Employee Director Equity Plan 2014 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares authorized | 1,000,000 |
Maximum aggregate grant date fair market value of awards per director for each calendar year | $ 750,000 |
Employee [Member] | 2008 Equity and Incentive Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares authorized | 12,000,000 |
Employee [Member] | 2008 Equity and Incentive Plan | Grant Awards, Other than Options, or Stock Appreciation Rights [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares authorized | 2,000,000 |
Subsequent Event [Member] | Director [Member] | Non-Employee Director Equity Plan 2014 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares authorized |  | 600,000
Subsequent Event [Member] | Employee [Member] | Equity and Incentive Plan, 2017 [Member] | Stock Options [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of shares authorized |  | 5,500,000

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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