CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 78,866	$ 24,298
Trade accounts and other receivables, net	48,596	132,573
Inventories:
Finished goods	77,537	106,941
Raw materials and supplies	27,021	37,502
Total inventories	104,558	144,443
Prepaid expenses and other current assets	3,762	5,241
Prepaid income taxes		19,708
Deferred income taxes	49,495	11,348
Total current assets	285,277	337,611
Property, plant and equipment:
Land and land improvements	45,774	40,921
Land-use and mineral rights	19,877	19,877
Buildings	83,500	74,911
Machinery and equipment	642,396	627,517
Construction in progress	96,084	109,378
Total	887,631	872,604
Less accumulated depreciation and amortization	349,900	303,888
Net property, plant and equipment	537,731	568,716
Goodwill	3,500	12,164
Intangible and other assets, net	9,861	15,735
Total assets	836,369	934,226
Current liabilities:
Bank borrowings	33,000	25,000
Accounts payable	10,709	22,922
Accrued payroll and benefits	6,003	12,466
Accrued freight	3,068	5,925
Accrued utilities	2,414	3,714
Accrued income taxes	139
Derivative instruments	6,240
Other accrued expenses	8,717	7,388
Total current liabilities	70,290	77,415
Deferred income taxes	63,858	$ 80,754
Long-term portion of bank borrowings	55,000
Derivative instruments	$ 4,915
Shareholders' equity:
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none outstanding
Common stock, par value $0.01 per share, 80,000,000 shares authorized; 23,280,696 and 23,092,674 shares issued and outstanding at December 31, 2015 and 2014, respectively	$ 233	$ 231
Additional paid-in capital	65,067	59,297
Retained earnings	614,708	739,498
Accumulated other comprehensive loss	(37,702)	(22,969)
Total shareholders' equity	642,306	776,057
Total liabilities and shareholders' equity	$ 836,369	$ 934,226