Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Current assets    
Cash and cash equivalents $ 131,523 $ 83,355
Restricted cash (Note 12)   18,251
Accounts receivable, net 76,007 61,775
Inventories, net 58,143 57,048
Other receivables 3,821 5,864
Prepaid expenses 11,680 8,137
Hedge collateral 6,590 3,150
Other current assets 5,063 5,113
Total current assets 292,827 242,693
Property, plant and equipment, net 186,078 179,793
Intangible assets, net 3,530 3,085
Long-term prepaid expenses 14,853 9,556
Deferred income tax assets 253 193
Other non-current assets 4,486 6,632
Total assets 502,027 441,952
Current liabilities    
Accounts payable 52,202 51,509
Other accounts payable 12,702 12,272
Accrued expenses 51,227 60,365
Deferred revenue 11,487 11,092
Deposits received (Note 12) 266 16,549
Other current liabilities 2,148 1,654
Total current liabilities 130,032 153,441
Long-term borrowings, net 302,380 221,082
Accrued severance benefits, net 130,050 129,225
Other non-current liabilities 10,055 10,318
Total liabilities 572,517 514,066
Commitments and Contingencies (Note 18)
Stockholders' equity    
Common stock, $0.01 par value, 150,000,000 shares authorized, 42,384,836 shares issued and 34,010,627 outstanding at June 30, 2017 and 41,627,103 shares issued and 35,048,338 outstanding at December 31, 2016 424 416
Additional paid-in capital 133,885 130,189
Accumulated deficit (90,146) (125,825)
Treasury stock, 8,374,209 shares at June 30, 2017 and 6,578,765 shares at December 31, 2016 (102,319) (90,918)
Accumulated other comprehensive income (loss) (12,334) 14,024
Total stockholders' deficit (70,490) (72,114)
Total liabilities and stockholders' equity $ 502,027 $ 441,952