CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues
Lime and limestone operations	$ 32,558	$ 35,658	$ 101,192	$ 99,242
Natural gas interests	1,558	3,524	5,450	9,846
Total revenues	34,116	39,182	106,642	109,088
Cost of revenues:
Labor and other operating expenses	22,620	23,151	70,321	66,494
Depreciation, depletion and amortization	3,737	3,492	11,006	10,243
Total cost of revenues	26,357	26,643	81,327	76,737
Gross profit	7,759	12,539	25,315	32,351
Selling, general and administrative expenses	2,090	2,297	6,684	6,563
Operating profit	5,669	10,242	18,631	25,788
Other expense (income):
Interest expense	539	618	1,657	1,898
Other, net	(16)	(50)	(67)	(113)
Total other expense (income)	523	568	1,590	1,785
Income before income taxes	5,146	9,674	17,041	24,003
Income tax expense	1,199	2,612	4,410	6,332
Net income	$ 3,947	$ 7,062	$ 12,631	$ 17,671
Income per share of common stock:
Basic (in dollars per share)	$ 0.71	$ 1.12	$ 2.19	$ 2.77
Diluted (in dollars per share)	$ 0.71	$ 1.11	$ 2.19	$ 2.76