Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 566,745	$ 894,948
Restricted cash	945	610
Short-term investments (amortized cost of $355,939 in 2020)	356,150	6,348
Accounts receivable, net of allowances	990,637	850,753
Inventories	299,830	220,602
Other current assets	54,264	28,272
Total current assets	2,268,571	2,001,533
Property, plant and equipment, net	2,560,195	2,404,850
Operating lease right of use assets	149,727	148,549
Goodwill	26,747	25,976
Restricted cash	3,087	2,974
Other assets	128,293	111,733
Total assets	5,136,620	4,695,615
Current liabilities:
Short-term borrowings and current portion of long-term debt	136,526	144,479
Trade accounts payable	611,965	571,054
Capital expenditures payable	328,171	77,044
Accrued expenses	298,708	267,226
Total current liabilities	1,375,370	1,059,803
Long-term debt	1,182,573	1,305,755
Pension and severance obligations	175,941	176,971
Long-term operating lease liabilities	88,257	91,107
Other non-current liabilities	91,742	71,740
Total liabilities	2,913,883	2,705,376
Commitments and contingencies (Note 14)
Stockholders’ equity:
Preferred stock, $0.001 par value, 10,000 shares authorized, designated Series A, none issued	0	0
Common stock, $0.001 par value, 500,000 shares authorized; 288,043 and 286,877 shares issued; and 241,955 and 240,805 shares outstanding in 2020 and 2019, respectively	288	287
Additional paid-in capital	1,943,140	1,927,739
Retained earnings	445,541	234,077
Accumulated other comprehensive income (loss)	23,309	19,115
Treasury stock, at cost, 46,088 and 46,072 shares, in 2020 and 2019, respectively	(217,660)	(217,479)
Total Amkor stockholders’ equity	2,194,618	1,963,739
Non-controlling interests in subsidiaries	28,119	26,500
Total equity	2,222,737	1,990,239
Total liabilities and equity	$ 5,136,620	$ 4,695,615