Stock-based compensation. (Details) - USD ($) |
12 Months Ended | |||||
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Dec. 31, 2020 |
Dec. 31, 2019 |
Nov. 18, 2019 |
Nov. 07, 2019 |
Jul. 16, 2016 |
Jul. 14, 2016 |
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Stock-based compensation. (Details) [Line Items] | ||||||
Intrinsic value of the options outstanding | $ 262,000 | $ 0 | ||||
Fair value common stock at vesting aggregate | 1,639,000 | $ 599,000 | ||||
Total compensation cost related to unvested awards | $ 865,000 | |||||
Compensation cost weighted average period | 1 year 135 days | |||||
2006 Stock Incentive Plan [Member] | ||||||
Stock-based compensation. (Details) [Line Items] | ||||||
Shares authorized | 1,715,000 | |||||
2016 Stock Incentive Plan [Member] | ||||||
Stock-based compensation. (Details) [Line Items] | ||||||
Shares authorized | 7,400,000 | 5,650,000 | 1,150,000 | 3,650,000 |
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- References No definition available.
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of shares authorized for issuance under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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