Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Preferred Stock [Member] | Common Stock [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Common Stock to Be Issued [Member] | Accumulated Other Comprehensive Loss [Member] | Accumulated Deficit [Member] | Total |
Balance at Dec. 31, 2017 | $ 0 | $ 699 | $ (8,034) | $ 498,577 | $ 0 | $ 0 | $ (452,702) | $ 38,540 |
Balance (in Shares) at Dec. 31, 2017 | 0 | 69,822,080 | | | | | | |
Accretion of redeemable noncontrolling interest | | | | | | | | 0 |
Correction of immaterial error in prior year and cumulative effect adjustment due to the adoption of ASU 2016-01 | $ 0 | $ 0 | 0 | 0 | 0 | 0 | 1,232 | 1,232 |
Issuance of common stock and warrants pursuant to financing agreements | $ 0 | $ 224 | 0 | 86,766 | 0 | 0 | 0 | 86,990 |
Issuance of common stock and warrants pursuant to financing agreements (in shares) | 0 | 22,385,038 | | | | | | |
Issuance of common stock for options exercised | $ 0 | $ 1 | 0 | 257 | 0 | 0 | 0 | 258 |
Issuance of common stock for options exercised (in shares) | 0 | 139,683 | | | | | | |
Repurchase of stock options to satisfy tax withholding obligations | $ 0 | $ 0 | 0 | (117) | 0 | 0 | 0 | (117) |
Issuance of common stock from exercise of warrants | $ 0 | $ 11 | 0 | 2,077 | 0 | 0 | 0 | 2,088 |
Issuance of common stock from exercise of warrants (in shares) | 0 | 1,054,147 | | | | | | |
Common stock to be issued | $ 0 | $ 0 | 0 | 0 | 1,000 | 0 | 0 | 1,000 |
Stock issuance costs | 0 | 0 | 0 | (756) | 0 | 0 | 0 | (756) |
Stock-based compensation expense, net of forfeitures | 0 | 0 | 0 | 3,518 | 0 | 0 | 0 | 3,518 |
Foreign currency translation adjustment | 0 | 0 | 0 | 0 | 0 | (1,225) | 0 | (1,225) |
Net loss attributable to CASI Pharmaceuticals, Inc. | 0 | 0 | 0 | 0 | 0 | 0 | (18,207) | (18,207) |
Balance at Sep. 30, 2018 | $ 0 | $ 935 | (8,034) | 590,322 | 1,000 | (1,225) | (469,677) | 113,321 |
Balance (in shares) at Sep. 30, 2018 | 0 | 93,400,948 | | | | | | |
Balance at Dec. 31, 2017 | $ 0 | $ 699 | (8,034) | 498,577 | 0 | 0 | (452,702) | 38,540 |
Balance (in Shares) at Dec. 31, 2017 | 0 | 69,822,080 | | | | | | |
Balance at Dec. 31, 2018 | $ 0 | $ 954 | (8,034) | 596,712 | | (1,227) | (478,941) | 109,464 |
Balance (in shares) at Dec. 31, 2018 | 0 | 95,287,268 | | | | | | |
Balance at Jun. 30, 2018 | $ 0 | $ 866 | (8,034) | 552,093 | 57 | (540) | (460,921) | 83,521 |
Balance (in Shares) at Jun. 30, 2018 | 0 | 86,509,487 | | | | | | |
Issuance of common stock and warrants pursuant to financing agreements | $ 0 | $ 68 | 0 | 36,432 | 0 | 0 | 0 | 36,500 |
Issuance of common stock and warrants pursuant to financing agreements (in shares) | 0 | 6,809,699 | | | | | | |
Issuance of common stock for options exercised | $ 0 | $ 0 | 0 | 81 | 0 | 0 | 0 | 81 |
Issuance of common stock for options exercised (in shares) | 0 | 32,600 | | | | | | |
Repurchase of stock options to satisfy tax withholding obligations | $ 0 | $ 0 | 0 | (63) | 0 | 0 | 0 | (63) |
Issuance of common stock from exercise of warrants | $ 0 | $ 1 | 0 | 184 | 0 | 0 | 0 | 185 |
Issuance of common stock from exercise of warrants (in shares) | 0 | 49,162 | | | | | | |
Common stock to be issued | $ 0 | $ 0 | 0 | 0 | 943 | 0 | 0 | 943 |
Common stock to be issued (in shares) | | 0 | | | | | | |
Stock issuance costs | 0 | $ 0 | 0 | (110) | 0 | 0 | 0 | (110) |
Stock-based compensation expense, net of forfeitures | 0 | 0 | 0 | 1,705 | 0 | 0 | 0 | 1,705 |
Foreign currency translation adjustment | 0 | 0 | 0 | 0 | 0 | (685) | 0 | (685) |
Net loss attributable to CASI Pharmaceuticals, Inc. | 0 | 0 | 0 | 0 | 0 | 0 | (8,756) | (8,756) |
Balance at Sep. 30, 2018 | $ 0 | $ 935 | (8,034) | 590,322 | $ 1,000 | (1,225) | (469,677) | 113,321 |
Balance (in shares) at Sep. 30, 2018 | 0 | 93,400,948 | | | | | | |
Balance at Dec. 31, 2018 | $ 0 | $ 954 | (8,034) | 596,712 | | (1,227) | (478,941) | 109,464 |
Balance (in Shares) at Dec. 31, 2018 | 0 | 95,287,268 | | | | | | |
Accretion of redeemable noncontrolling interest | $ 0 | $ 0 | 0 | (406) | | 0 | 0 | (406) |
Issuance of common stock for options exercised | $ 0 | $ 1 | 0 | 113 | | 0 | 0 | 114 |
Issuance of common stock for options exercised (in shares) | 0 | 64,137 | | | | | | |
Repurchase of stock options to satisfy tax withholding obligations | $ 0 | $ 0 | 0 | (12) | | 0 | 0 | (12) |
Issuance of common stock from exercise of warrants | $ 0 | $ 9 | 0 | 1,659 | | 0 | 0 | 1,668 |
Issuance of common stock from exercise of warrants (in shares) | 0 | 987,653 | | | | | | |
Stock issuance costs | $ 0 | $ 0 | 0 | (8) | | 0 | 0 | (8) |
Stock-based compensation expense, net of forfeitures | 0 | 0 | 0 | 5,320 | | 0 | 0 | 5,320 |
Foreign currency translation adjustment | 0 | 0 | 0 | 0 | | (2,636) | 0 | (2,636) |
Net loss attributable to CASI Pharmaceuticals, Inc. | 0 | 0 | 0 | 0 | | 0 | (33,133) | (33,133) |
Balance at Sep. 30, 2019 | $ 0 | $ 964 | (8,034) | 603,378 | | (3,863) | (512,074) | 80,371 |
Balance (in shares) at Sep. 30, 2019 | 0 | 96,339,058 | | | | | | |
Balance at Jun. 30, 2019 | $ 0 | $ 958 | (8,034) | 600,569 | | (2,027) | (502,428) | 89,038 |
Balance (in Shares) at Jun. 30, 2019 | 0 | 95,717,052 | | | | | | |
Accretion of redeemable noncontrolling interest | $ 0 | $ 0 | 0 | (245) | | 0 | 0 | (245) |
Issuance of common stock for options exercised | $ 0 | $ 0 | 0 | 75 | | 0 | 0 | 75 |
Issuance of common stock for options exercised (in shares) | 0 | 45,875 | | | | | | |
Issuance of common stock from exercise of warrants | $ 0 | $ 6 | 0 | 968 | | 0 | 0 | 974 |
Issuance of common stock from exercise of warrants (in shares) | 0 | 576,131 | | | | | | |
Stock-based compensation expense, net of forfeitures | $ 0 | $ 0 | 0 | 2,011 | | 0 | 0 | 2,011 |
Foreign currency translation adjustment | 0 | 0 | 0 | 0 | | (1,836) | 0 | (1,836) |
Net loss attributable to CASI Pharmaceuticals, Inc. | 0 | 0 | 0 | 0 | | 0 | (9,646) | (9,646) |
Balance at Sep. 30, 2019 | $ 0 | $ 964 | $ (8,034) | $ 603,378 | | $ (3,863) | $ (512,074) | $ 80,371 |
Balance (in shares) at Sep. 30, 2019 | 0 | 96,339,058 | | | | | | |