CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues
Lime and limestone operations	$ 35,658	$ 30,458	$ 99,242	$ 98,090
Natural gas interests	3,524	1,411	9,846	5,320
Total revenues	39,182	31,869	109,088	103,410
Cost of revenues:
Labor and other operating expenses	23,151	19,831	66,494	64,860
Depreciation, depletion and amortization	3,492	3,173	10,243	9,606
Total cost of revenues	26,643	23,004	76,737	74,466
Gross profit	12,539	8,865	32,351	28,944
Selling, general and administrative expenses	2,297	1,878	6,563	6,188
Operating profit	10,242	6,987	25,788	22,756
Other expense (income):
Interest expense	618	707	1,898	2,027
Other, net	(50)	(14)	(113)	(60)
Total other expense (income)	568	693	1,785	1,967
Income before income taxes	9,674	6,294	24,003	20,789
Income tax expense	2,612	1,748	6,332	5,918
Net income	$ 7,062	$ 4,546	$ 17,671	$ 14,871
Income per share of common stock:
Basic (in dollars per share)	$ 1.12	$ 0.71	$ 2.77	$ 2.32
Diluted (in dollars per share)	$ 1.11	$ 0.71	$ 2.76	$ 2.32