CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues
Lime and limestone operations	$ 33,154	$ 29,362
Natural gas interests	432	702
Total revenues	33,586	30,064
Cost of revenues:
Labor and other operating expenses	21,829	20,316
Depreciation, depletion and amortization	3,909	3,884
Total cost of revenues	25,738	24,200
Gross profit	7,848	5,864
Selling, general and administrative expenses	2,400	2,399
Operating profit	5,448	3,465
Other expenses (income):
Interest expense	59	322
Other income, net	(43)	(7)
Total other expense (income)	16	315
Income before income taxes	5,432	3,150
Income tax expense	1,366	785
Net income	$ 4,066	$ 2,365
Income per share of common stock:
Basic (in dollars per share)	$ 0.73	$ 0.42
Diluted (in dollars per share)	0.73	0.42
Cash dividends per share of common stock (in dollars per share)	$ 0.125	$ 0.125