Unaudited Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
ASSETS
Cash and cash equivalents	$ 50,598	$ 95,390	$ 79,353
Accounts receivable, net	97,639	120,789	107,630
Accounts receivable from affiliates	44,339	32,636	30,551
Inventories, net	220,607	184,445	207,349
Deferred income taxes	11,486	14,452	14,428
Prepaid expenses and other	25,774	13,578	15,644
Total current assets	450,443	461,290	454,955
Property, plant and equipment, net	252,039	219,256	193,864
Coal supply agreements and other intangibles, net	57,017	59,685	64,590
Other non-current assets	69,661	69,725	64,680
Total assets	829,160	809,956	778,089
LIABILITIES AND EQUITY
Accounts payable	149,343	133,016	141,919
Revolving credit agreements of subsidiaries - not guaranteed by the parent company	69,805	23,460	37,812
Current maturities of long-term debt of subsidiaries - not guaranteed by the parent company	7,886	7,859	7,850
Accrued payroll	19,136	29,030	22,469
Other current liabilities	41,325	44,754	40,418
Total current liabilities	287,495	238,119	250,468
Long-term debt of subsidiaries - not guaranteed by the parent company	138,958	152,431	129,123
Mine closing reserves	36,217	29,764	29,212
Pension and other postretirement obligations	7,312	7,648	6,873
Long-term deferred income taxes	23,304	24,786	23,074
Other long-term liabilities	66,632	59,428	63,618
Total liabilities	559,918	512,176	502,368
Common stock:
Capital in excess of par value	0	941	367
Retained earnings	274,297	301,227	284,523
Accumulated other comprehensive loss	(12,450)	(12,259)	(17,107)
Total stockholders' equity	269,242	297,780	275,721
Total liabilities and equity	829,160	809,956	778,089
Shares Outstanding Class A
Common stock:
Common stock	5,821	6,290	6,357
Shares Outstanding Class B
Common stock:
Common stock	$ 1,574	$ 1,581	$ 1,581