Reportable Segment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) segment	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Business segments
Number of business segments | segment	1
Revenues	$ 71,687	$ 66,777
Depreciation, depletion and amortization	5,979	5,756
Gross profit	30,607	23,992
Operating profit (loss)	25,759	19,840
Identifiable assets, at period end	463,996	387,745	$ 440,602
Capital expenditures	6,824	5,451
Operating Segment | Lime and Limestone Operations Segment Member
Business segments
Depreciation, depletion and amortization	5,857	5,630
Gross profit	30,683	24,058
Operating profit (loss)	25,839	19,909
Identifiable assets, at period end	252,551	235,693
Capital expenditures	6,824	5,451
Unallocated corporate assets and cash items
Business segments
Depreciation, depletion and amortization	122	126
Gross profit	(76)	(66)
Operating profit (loss)	(80)	(69)
Identifiable assets, at period end	211,445	152,052
Lime and limestone operations | Operating Segment | Lime and Limestone Operations Segment Member
Business segments
Revenues	71,470	66,538
Others | Unallocated corporate assets and cash items
Business segments
Revenues	$ 217	$ 239