v3.20.4

Subsequent events (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 26, 2021 | Jan. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Performance-based restricted stock unit awards |  |  |  |
Subsequent events |  |  |  |
Granted (in shares) |  |  | 36,000 |
Vesting period |  |  | 3 years | 3 years
Subsequent events |  |  |  |
Subsequent events |  |  |  |
Merger price per share (USD per share) | $ 14.00 |  |  |
Go shop period | 25 days |  |  |
Termination fee payable to enter into Superior proposal | $ 13,100 |  |  |
Termination fee payable in other circumstances | $ 19,600 |  |  |
Minimum percentage acquisition proposal not withdrawn prior to merger agreement termination (as a percent) | 50.10% |  |  |
Period after termination of merger agreement within which receipt of acquisition proposal triggers termination fee | 1 year |  |  |
Maximum expense payable to other party | $ 2,500 |  |  |
Parent termination fee payable | $ 32,700 |  |  |
Subsequent events | Executive members | Service based-restricted stock unit awards |  |  |  |
Subsequent events |  |  |  |
Granted (in shares) |  | 295,000 |  |
Vesting period |  | 3 years |  |
Subsequent events | Executive members | Performance-based restricted stock unit awards |  |  |  |
Subsequent events |  |  |  |
Granted (in shares) |  | 295,000 |  |
Subsequent events | Non-executive personnel | Service based-restricted stock unit awards |  |  |  |
Subsequent events |  |  |  |
Granted (in shares) |  | 336,000 |  |
Vesting period |  | 3 years |  |

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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + 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://fasb.org/us-gaap/role/ref/legacyRef -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=120381028&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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- Definition The period of Go-Shop in a merger agreement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The maximum amount that the entity is liable to pay the other party of merger agreement upon termination of agreement. + References No definition available. + Details
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- Definition The amount the of termination fee payable if other party fails to consummate the Merger after the applicable closing conditions are met. + References No definition available. + Details
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- Definition Price per share of the entity's stock in a merger agreement. + References No definition available. + Details
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- Definition Period of receipt of acquisition proposal after termination of merger agreement which requires the entity to pay termination fee in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Minimum percentage of acquisition of entity's stock that is not withdrawn prior to merger agreement termination which triggers termination liability to the other party in the merger agreement. + References No definition available. + Details
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- Definition The amount of termination fee of the merger agreement during the Go-Shop Period other than to enter into an agreement for a Superior Proposal. + References No definition available. + Details
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- Definition The amount of termination fee of the merger agreement during the Go-Shop Period to enter into an agreement for a Superior Proposal. + References No definition available. + Details
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