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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Treasury Stock | Additional Paid-in Capital | Accumulated Deficit | Other Comprehensive Loss
--- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2021 |  | 20,028 |  |  |  |
Beginning balance at Dec. 31, 2021 | $ 158,240 | $ 204 | $ (5,017) | $ 429,912 | $ (266,760) | $ (99)
Stock issued upon option exercise and vesting of restricted stock units (in shares) |  | 43 |  |  |  |
Stock issued upon option exercise and vesting of restricted stock units | 1 | $ 1 |  |  |  |
Share based compensation | 729 |  |  | 729 |  |
Net income | (3,017) |  |  |  | (3,017) |
Other comprehensive income | (1,063) |  |  |  |  | (1,063)
Ending balance (in shares) at Mar. 31, 2022 |  | 20,071 |  |  |  |
Ending balance at Mar. 31, 2022 | 154,890 | $ 205 | (5,017) | 430,641 | (269,777) | (1,162)
Beginning balance (in shares) at Dec. 31, 2021 |  | 20,028 |  |  |  |
Beginning balance at Dec. 31, 2021 | $ 158,240 | $ 204 | (5,017) | 429,912 | (266,760) | (99)
Stock issued upon option exercise and vesting of restricted stock units (in shares) | 0 |  |  |  |  |
Net income | $ (13,410) |  |  |  |  |
Ending balance (in shares) at Sep. 30, 2022 |  | 20,160 |  |  |  |
Ending balance at Sep. 30, 2022 | 144,562 | $ 205 | (5,017) | 432,445 | (280,170) | (2,901)
Beginning balance (in shares) at Mar. 31, 2022 |  | 20,071 |  |  |  |
Beginning balance at Mar. 31, 2022 | 154,890 | $ 205 | (5,017) | 430,641 | (269,777) | (1,162)
Stock issued upon option exercise and vesting of restricted stock units (in shares) |  | 33 |  |  |  |
Stock issued upon option exercise and vesting of restricted stock units | 0 |  |  |  |  |
Stock issued, ESPP (in shares) |  | 38 |  |  |  |
Stock issued, ESPP | 192 |  |  | 192 |  |
Share based compensation | 814 |  |  | 814 |  |
Net income | (5,860) |  |  |  | (5,860) |
Other comprehensive income | (496) |  |  |  |  | (496)
Ending balance (in shares) at Jun. 30, 2022 |  | 20,142 |  |  |  |
Ending balance at Jun. 30, 2022 | $ 149,540 | $ 205 | (5,017) | 431,647 | (275,637) | (1,658)
Stock issued upon option exercise and vesting of restricted stock units (in shares) | 0 | 18 |  |  |  |
Stock issued upon option exercise and vesting of restricted stock units | $ 0 |  |  |  |  |
Share based compensation | 798 |  |  | 798 |  |
Net income | (4,533) |  |  |  | (4,533) |
Other comprehensive income | (1,243) |  |  |  |  | (1,243)
Ending balance (in shares) at Sep. 30, 2022 |  | 20,160 |  |  |  |
Ending balance at Sep. 30, 2022 | 144,562 | $ 205 | (5,017) | 432,445 | (280,170) | (2,901)
Beginning balance (in shares) at Dec. 31, 2022 |  | 20,244 |  |  |  |
Beginning balance at Dec. 31, 2022 | 145,066 | $ 206 | (5,017) | 433,586 | (281,226) | (2,483)
Stock issued upon option exercise and vesting of restricted stock units (in shares) |  | 375 |  |  |  |
Stock issued upon option exercise and vesting of restricted stock units | 1,988 | $ 4 |  | 1,984 |  |
Share based compensation | 1,337 |  |  | 1,337 |  |
Net income | 339 |  |  |  | 339 |
Other comprehensive income | 481 |  |  |  |  | 481
Ending balance (in shares) at Mar. 31, 2023 |  | 20,619 |  |  |  |
Ending balance at Mar. 31, 2023 | 149,211 | $ 210 | (5,017) | 436,907 | (280,887) | (2,002)
Beginning balance (in shares) at Dec. 31, 2022 |  | 20,244 |  |  |  |
Beginning balance at Dec. 31, 2022 | $ 145,066 | $ 206 | (5,017) | 433,586 | (281,226) | (2,483)
Stock issued upon option exercise and vesting of restricted stock units (in shares) | 349 |  |  |  |  |
Net income | $ (5,632) |  |  |  |  |
Ending balance (in shares) at Sep. 30, 2023 |  | 24,851 |  |  |  |
Ending balance at Sep. 30, 2023 | 191,662 | $ 252 | (5,017) | 485,981 | (286,858) | (2,696)
Beginning balance (in shares) at Mar. 31, 2023 |  | 20,619 |  |  |  |
Beginning balance at Mar. 31, 2023 | 149,211 | $ 210 | (5,017) | 436,907 | (280,887) | (2,002)
Stock issued upon option exercise and vesting of restricted stock units (in shares) |  | 40 |  |  |  |
Stock issued upon option exercise and vesting of restricted stock units | 42 |  |  | 42 |  |
Stock issued, ESPP (in shares) |  | 46 |  |  |  |
Stock issued, ESPP | 237 | $ 1 |  | 236 |  |
Share based compensation | 1,582 |  |  | 1,582 |  |
Net income | (3,765) |  |  |  | (3,765) |
Other comprehensive income | (493) |  |  |  |  | (493)
Ending balance (in shares) at Jun. 30, 2023 |  | 20,705 |  |  |  |
Ending balance at Jun. 30, 2023 | $ 146,814 | $ 211 | (5,017) | 438,767 | (284,652) | (2,495)
Stock issued upon option exercise and vesting of restricted stock units (in shares) | 66 | 99 |  |  |  |
Stock issued upon option exercise and vesting of restricted stock units | $ 480 | $ 1 |  | 479 |  |
Stock Issued During Period, Value, New Issues | 45,524 | $ 40 |  | 45,484 |  |
Stock Issued During Period, Shares, New Issues |  | 4,047 |  |  |  |
Share based compensation | 1,251 |  |  | 1,251 |  |
Net income | (2,206) |  |  |  | (2,206) |
Other comprehensive income | (201) |  |  |  |  | (201)
Ending balance (in shares) at Sep. 30, 2023 |  | 24,851 |  |  |  |
Ending balance at Sep. 30, 2023 | $ 191,662 | $ 252 | $ (5,017) | $ 485,981 | $ (286,858) | $ (2,696)

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