Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
ASSETS
Cash and cash equivalents	$ 11,847	$ 61,135	$ 50,598
Accounts receivable, net	118,097	123,466	97,639
Accounts receivable from affiliates	2,793	57,421	44,339
Inventories, net	234,214	190,382	220,607
Deferred income taxes	23,024	18,566	11,486
Prepaid expenses and other	21,318	14,743	25,774
Total current assets	411,293	465,713	450,443
Property, plant and equipment, net	151,767	159,644	252,039
Goodwill	6,253	6,253	0
Other Intangibles, net	57,650	60,821	57,017
Deferred income taxes	15,984	15,806	1,175
Other non-current assets	59,770	62,283	68,486
Total assets	702,717	770,520	829,160
LIABILITIES AND EQUITY
Accounts payable	161,040	133,668	149,343
Revolving credit agreements of subsidiaries - not guaranteed by the parent company	13,858	55,000	69,805
Current maturities of long-term debt of subsidiaries - not guaranteed by the parent company	1,495	1,467	7,886
Accrued payroll	34,336	23,567	19,136
Other current liabilities	45,270	40,979	41,325
Total current liabilities	255,999	254,681	287,495
Long-term debt of subsidiaries - not guaranteed by the parent company	158,650	191,431	138,958
Mine closing reserves	40,453	37,399	36,217
Pension and other postretirement obligations	9,711	10,616	7,312
Deferred income taxes	0	0	23,304
Other long-term liabilities	53,160	64,919	66,632
Total liabilities	517,973	559,046	559,918
Common stock:
Retained earnings	200,853	224,428	274,297
Accumulated other comprehensive loss	(22,958)	(20,189)	(12,450)
Total stockholders' equity	184,744	211,474	269,242
Total liabilities and equity	702,717	770,520	829,160
Shares Outstanding Class A
Common stock:
Common stock	5,277	5,662	5,821
Shares Outstanding Class B
Common stock:
Common stock	$ 1,572	$ 1,573	$ 1,574