Stock-based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions |
6 Months Ended |
Jun. 30, 2020 |
Jun. 30, 2019 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Closing stock price as reported on the Nasdaq (in dollars per share) |
$ 1.13
|
|
| Weighted average fair value of options granted (in dollars per share) |
$ 0.88
|
$ 1.00
|
| Unrecognized compensation cost related to options granted after adjustment for estimated forfeitures |
$ 0.9
|
|
| Expected weighted average remaining period to recognize total unrecognized compensation cost |
1 year 10 months 13 days
|
|
| RSU |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Expected weighted average remaining period to recognize total unrecognized compensation cost |
1 year 9 months 21 days
|
|
| Total unrecognized compensation cost, adjusted for estimated forfeitures for awards excluding option |
$ 0.6
|
|
| PSU |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Expected weighted average remaining period to recognize total unrecognized compensation cost |
2 years 6 months 3 days
|
|
| Total unrecognized compensation cost, adjusted for estimated forfeitures for awards excluding option |
$ 0.2
|
|