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v3.20.2

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | Revision Of Prior Period Accounting Standards Update Adjustment [Member] | Common Stock [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Retained Earnings (Accumulated Deficit) [Member] | Retained Earnings (Accumulated Deficit) [Member] Revision Of Prior Period Accounting Standards Update Adjustment [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
BALANCE at Dec. 31, 2018 | $ 355,203 | $ 1,035 | $ 852 | $ (220,700) | $ 628,295 | $ (298) | $ (52,946) | $ 1,035
BALANCE, shares at Dec. 31, 2018 |  |  | 85,174,000 |  |  |  |  |
BALANCE, shares at Dec. 31, 2018 |  |  |  | (15,401,000) |  |  |  |
Net income (loss) | 24,232 |  |  |  |  |  | 24,232 |
Foreign currency translation | (17) |  |  |  |  | (17) |  |
Unrealized gain on investments | 770 |  |  |  |  | 770 |  |
Share-based compensation expense | 2,406 |  |  |  | 2,406 |  |  |
Common stock issued | (2,381) |  | $ 5 | $ (2,563) | 177 |  |  |
Common stock issued, shares |  |  | 494,000 | (157,000) |  |  |  |
BALANCE at Jun. 30, 2019 | 381,248 |  | $ 857 | $ (223,263) | 630,878 | 455 | (27,679) |
BALANCE, shares at Jun. 30, 2019 |  |  | 85,668,000 |  |  |  |  |
BALANCE, shares at Jun. 30, 2019 |  |  |  | (15,558,000) |  |  |  |
BALANCE at Mar. 31, 2019 | 380,322 |  | $ 857 | $ (223,232) | 629,768 | 49 | (27,120) |
BALANCE, shares at Mar. 31, 2019 |  |  | 85,659,000 |  |  |  |  |
BALANCE, shares at Mar. 31, 2019 |  |  |  | (15,556,000) |  |  |  |
Net income (loss) | (559) |  |  |  |  |  | (559) |
Foreign currency translation | 35 |  |  |  |  | 35 |  |
Unrealized gain on investments | 371 |  |  |  |  | 371 |  |
Share-based compensation expense | 1,037 |  |  |  | 1,037 |  |  |
Common stock issued | 42 |  |  | $ (31) | 73 |  |  |
Common stock issued, shares |  |  | 9,000 | (2,000) |  |  |  |
BALANCE at Jun. 30, 2019 | 381,248 |  | $ 857 | $ (223,263) | 630,878 | 455 | (27,679) |
BALANCE, shares at Jun. 30, 2019 |  |  | 85,668,000 |  |  |  |  |
BALANCE, shares at Jun. 30, 2019 |  |  |  | (15,558,000) |  |  |  |
BALANCE at Dec. 31, 2019 | $ 431,295 |  | $ 860 | $ (227,315) | 639,335 | 344 | 18,071 |
BALANCE, shares at Dec. 31, 2019 | 85,953,253 |  | 85,953,000 |  |  |  |  |
BALANCE, shares at Dec. 31, 2019 | (15,801,896) |  |  | (15,802,000) |  |  |  |
Net income (loss) | $ 57,273 |  |  |  |  |  | 57,273 |
Foreign currency translation | 5 |  |  |  |  | 5 |  |
Unrealized gain on investments | 592 |  |  |  |  | 592 |  |
Treasury stock purchased | (17,309) |  |  | $ (17,309) |  |  |  |
Treasury stock purchased, shares |  |  |  | (1,284,000) |  |  |  |
Share-based compensation expense | 6,503 |  |  |  | 6,503 |  |  |
Common stock issued | 325 |  | $ 3 | $ (689) | 1,011 |  |  |
Common stock issued, shares |  |  | 326,000 | (62,000) |  |  |  |
BALANCE at Jun. 30, 2020 | $ 478,684 |  | $ 863 | $ (245,313) | 646,849 | 941 | 75,344 |
BALANCE, shares at Jun. 30, 2020 | 86,278,765 |  | 86,279,000 |  |  |  |  |
BALANCE, shares at Jun. 30, 2020 | (17,148,016) |  |  | (17,148,000) |  |  |  |
BALANCE at Mar. 31, 2020 | $ 445,143 |  | $ 862 | $ (245,311) | 642,958 | (543) | 47,177 |
BALANCE, shares at Mar. 31, 2020 |  |  | 86,209,000 |  |  |  |  |
BALANCE, shares at Mar. 31, 2020 |  |  |  | (17,148,000) |  |  |  |
Net income (loss) | 28,167 |  |  |  |  |  | 28,167 |
Foreign currency translation | 53 |  |  |  |  | 53 |  |
Unrealized gain on investments | 1,431 |  |  |  |  | 1,431 |  |
Share-based compensation expense | 3,291 |  |  |  | 3,291 |  |  |
Common stock issued | 599 |  | $ 1 | $ (2) | 600 |  |  |
Common stock issued, shares |  |  | 70,000 |  |  |  |  |
BALANCE at Jun. 30, 2020 | $ 478,684 |  | $ 863 | $ (245,313) | $ 646,849 | $ 941 | $ 75,344 |
BALANCE, shares at Jun. 30, 2020 | 86,278,765 |  | 86,279,000 |  |  |  |  |
BALANCE, shares at Jun. 30, 2020 | (17,148,016) |  |  | (17,148,000) |  |  |  |

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