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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Current assets    
Cash and cash equivalents $ 273,797 $ 279,547
Accounts receivable, net 59,817 50,954
Inventories, net 36,168 39,370
Other receivables (Note 16) 14,094 25,895
Prepaid expenses 10,783 7,675
Hedge collateral (Note 7) 6,990 3,060
Other current assets (Note 17) 8,361 2,619
Total current assets 410,010 409,120
Property, plant and equipment, net 96,832 107,882
Operating lease right-of-use assets 3,322 4,275
Intangible assets, net 1,979 2,377
Long-term prepaid expenses 14,953 8,243
Deferred income taxes 37,825 41,095
Other non-current assets 10,804 10,662
Total assets 575,725 583,654
Current liabilities    
Accounts payable 38,143 37,593
Other accounts payable 14,835 6,289
Accrued expenses (Note 6) 15,426 20,071
Accrued income taxes 0 11,823
Operating lease liabilities 1,838 2,323
Other current liabilities (Notes 7 and 8) 8,562 7,382
Total current liabilities 78,804 85,481
Accrued severance benefits, net 30,466 33,064
Non-current operating lease liabilities 1,485 1,952
Other non-current liabilities 16,823 10,395
Total liabilities 127,578 130,892
Commitments and contingencies (Note 17)
Stockholders' equity    
Common stock, $0.01 par value, 150,000,000 shares authorized, 56,234,774 shares issued and 44,903,718 outstanding at June 30, 2022 and 55,905,320 shares issued and 45,659,304 outstanding at December 31, 2021 562 559
Additional paid-in capital 263,698 241,197
Retained earnings 349,730 343,542
Treasury stock, 11,331,056 shares at June 30, 2022 and 10,246,016 shares at December 31, 2021, respectively (148,523) (130,306)
Accumulated other comprehensive loss (17,320) (2,230)
Total stockholders' equity 448,147 452,762
Total liabilities and stockholders' equity $ 575,725 $ 583,654