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v3.8.0.1

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands | 2 Months Ended | 8 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 28, 2018 | Feb. 27, 2018 | Sep. 12, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Subsequent Events [Line Items] |  |  |  |  |  |  |
Number of shares granted |  |  |  | 944,000 | 1,035,000 | 135,230 |
Number of shares vested during the period |  |  |  | 1,049,000 | 783,545 | 78,833 |
Unvested shares |  |  |  | 280,000 | 385,000 | 135,230 | 78,833
Directors and officers |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Number of shares granted |  |  | 345,000 |  |  |  |
Grant date fair value |  |  | $ 4.94 |  |  |  |
Directors and officers | First installment |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Vesting date |  |  |  | Mar. 30, 2017 |  |  |
Unvested shares |  |  |  | 305,000 |  |  |
Directors and officers | Second installment |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Vesting date |  |  |  | Mar. 01, 2018 |  |  |
Unvested shares |  |  |  | 40,000 |  |  |
Subsequent Event |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Excess cash paid | $ 35,632 |  |  |  |  |  |
Subsequent Event | 2018 Equity Incentive Plan |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Shares reserved for issuance |  | 700,000 |  |  |  |  |
Subsequent Event | 2018 Equity Incentive Plan | Directors and officers |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Number of shares granted |  | 396,500 |  |  |  |  |
Grant date fair value |  | $ 12.36 |  |  |  |  |
Subsequent Event | 2018 Equity Incentive Plan | Directors and officers | First installment |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Vesting date |  | Aug. 27, 2018 |  |  |  |  |
Unvested shares |  | 253,500 |  |  |  |  |
Subsequent Event | 2018 Equity Incentive Plan | Directors and officers | Second installment |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Vesting date |  | Feb. 27, 2019 |  |  |  |  |
Unvested shares |  | 71,500 |  |  |  |  |
Subsequent Event | 2018 Equity Incentive Plan | Directors and officers | Third installment |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |
Vesting date |  | Feb. 27, 2021 |  |  |  |  |
Unvested shares |  | 71,500 |  |  |  |  |

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- Definition Date which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition The fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References No definition available. + Details
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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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