December 31,

2016

December 31,

2015

Assets

Current assets

Cash and cash equivalents

$           83,355

$           90,882

Restricted cash

18,251

—

Accounts receivable, net

61,775

63,498

Inventories, net

57,048

57,619

Other receivables

5,864

31,932

Prepaid expenses

8,137

7,075

Current deferred income tax assets

37

34

Hedge collateral

3,150

6,000

Other current assets

5,076

3,194

Total current assets

242,693

260,234

Property, plant and equipment, net

179,793

191,985

Intangible assets, net

3,085

2,629

Long-term prepaid expenses

9,556

12,117

Deferred income tax assets

193

238

Other non-current assets

6,632

6,897

Total assets

$        441,952

$        474,100

Liabilities and Stockholders' Equity

Current liabilities

Accounts payable

$           51,509

$           55,476

Other accounts payable

12,272

10,961

Accrued expenses

60,365

76,721

Deferred revenue

11,092

10,060

Deposits received

16,549

8,165

Other current liabilities

1,654

5,128

Total current liabilities

153,441

166,511

Long-term borrowings, net

221,082

220,375

Accrued severance benefits, net

129,225

134,148

Other non-current liabilities

10,318

15,396

Total liabilities

514,066

536,430

Commitments and contingencies

Stockholders' equity

Common stock, $0.01 par value, 150,000,000 shares authorized, 41,627,103 shares issued and  35,048,338 outstanding at December 31, 2016 and 41,147,707 shares issued and 34,568,942 outstanding at December 31, 2015

416

411

Additional paid-in capital

130,189

124,618

Accumulated deficit

(125,825)

(96,210)

Treasury stock, 6,578,765 shares at December 31, 2016 and 2015, respectively

(90,918)

(90,918)

Accumulated other comprehensive income (loss)

14,024

(231)

Total stockholders' deficit

(72,114)

(62,330)

Total liabilities and stockholders' equity

$        441,952

$        474,100