Related Parties (Details) $ in Thousands |
|
1 Months Ended |
12 Months Ended |
|
Jun. 21, 2018
USD ($)
|
May 31, 2017
USD ($)
|
Apr. 30, 2017
USD ($)
item
|
Jan. 31, 2017
USD ($)
|
Dec. 31, 2020
USD ($)
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2017
USD ($)
|
| Related Parties |
|
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| Sublease income |
|
|
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$ 1,017
|
$ 908
|
|
| Maturity term from issuance date of the notes |
|
7 years
|
7 years
|
|
|
|
|
| Maturity date of termination |
|
60 days
|
60 days
|
|
|
|
|
| Interest rate (as a percent) |
|
|
2.05%
|
|
|
|
|
| January 2017 promissory note |
|
|
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|
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| Related Parties |
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| Amount due to related party |
|
|
|
|
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|
$ 0
|
| Amount due from related party |
|
|
|
|
|
|
0
|
| Interest rate (as a percent) |
|
|
|
1.97%
|
|
|
|
| May 2017 promissory note |
|
|
|
|
|
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| Related Parties |
|
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| Amount due to related party |
|
|
|
|
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|
0
|
| Amount due from related party |
|
|
|
|
|
|
0
|
| Interest rate (as a percent) |
|
2.04%
|
|
|
|
|
|
| Board of Directors Chairman |
|
|
|
|
|
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| Related Parties |
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| Loan receivable |
|
$ 1,800
|
|
$ 700
|
|
|
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| Principal amount of promissory note forgiven |
$ 2,500
|
|
|
|
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| Interest on promissory note forgiven |
100
|
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| Executive officer |
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| Related Parties |
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| Amount due from related party |
|
|
|
|
|
|
0
|
| Principal balance of promissory note repaid |
200
|
|
|
|
|
|
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| Amount of promissory note received from early exercise of stock options |
|
|
$ 200
|
|
|
|
|
| Number of promissory notes | item |
|
|
2
|
|
|
|
|
| Number of restricted stock agreements | item |
|
|
2
|
|
|
|
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| Interest paid |
$ 100
|
|
|
|
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|
$ 0
|