Summary of Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Summary of Quarterly Financial Data (unaudited)

Summary of unaudited quarterly financial data

	2014
	March 31,		June 30,		September 30,		December 31,
Revenues
Lime and limestone operations	$	35,051	$	37,320	$	37,855	$	34,341
Natural gas interests		1,640		1,356		1,218		1,060
	$	36,691	$	38,676	$	39,073	$	35,401
Gross profit
Lime and limestone operations	$	7,662	$	9,704	$	9,271	$	7,321
Natural gas interests		930		719		612		572
	$	8,592	$	10,423	$	9,883	$	7,893
Net income	$	4,492	$	5,718	$	5,426	$	3,731
Basic income per common share	$	0.81	$	1.03	$	0.97	$	0.67
Diluted income per common share	$	0.80	$	1.03	$	0.97	$	0.67

	2013
	March 31,		June 30,		September 30,		December 31,
Revenues
Lime and limestone operations	$	30,155	$	33,684	$	35,498	$	28,666
Natural gas interests		1,430		1,488		1,401		1,443
	$	31,585	$	35,172	$	36,899	$	30,109
Gross profit
Lime and limestone operations	$	5,667	$	8,363	$	8,409	$	5,474
Natural gas interests		624		601		701		961
	$	6,291	$	8,964	$	9,110	$	6,435
Net income	$	2,757	$	4,626	$	4,789	$	2,628
Basic income per common share	$	0.50	$	0.83	$	0.86	$	0.47
Diluted income per common share	$	0.50	$	0.83	$	0.86	$	0.47