CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 39,865	$ 72,752
Restricted cash	1,200	1,725
Trade accounts and other receivables, net	21,912	35,693
Inventories:
Finished goods	36,200	41,422
Raw materials and supplies	21,087	22,592
Total inventories	57,287	64,014
Prepaid expenses and other current assets	4,985	4,754
Income tax receivable	3,138	2,319
Total current assets	128,387	181,257
Restricted cash	9,159	8,840
Property, plant and equipment:
Land and land improvements	36,816	39,584
Land-use and mineral rights	19,523	19,696
Buildings	75,743	75,815
Machinery and equipment	416,369	432,906
Construction in progress	27,116	29,129
Total property, plant and equipment	575,567	597,130
Less accumulated depreciation and amortization	335,006	323,511
Net property, plant and equipment	240,561	273,619
Goodwill	3,500	3,500
Operating lease right-of-use assets	45,241
Intangible and other assets, net	11,799	7,150
Total assets	438,647	474,366
Current liabilities:
Accounts payable	11,233	12,174
Accrued payroll and benefits	4,699	6,950
Accrued freight	2,728	2,434
Accrued utilities	751	1,012
Other accrued expenses	15,224	14,020
Notes payable, related parties		27,040
Long-term debt, current portion		15,733
Operating lease liabilities	11,522
Other current liabilities	2,181	1,192
Total current liabilities	48,338	80,555
Deferred income taxes	1,220	1,114
Long-term debt, net	62,236	45,650
Noncurrent operating lease liabilities	45,916
Other long-term liabilities	3,686	10,764
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; 29,369,707 and 27,710,861 shares issued and outstanding at September 30, 2019 and December 31, 2018, respectively	294	277
Additional paid-in capital	138,936	132,080
Retained earnings	138,021	203,926
Total shareholders' equity	277,251	336,283
Total liabilities and shareholders' equity	$ 438,647	$ 474,366