Reportable Segment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) segment	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Business segments
Number of business segments | segment	1
Revenues	$ 66,777	$ 50,909
Depreciation, depletion and amortization	5,756	5,183
Gross profit	23,992	14,467
Operating profit	19,840	10,832
Identifiable assets, at period end	387,745	324,747	$ 367,772
Capital expenditures	5,451	5,517
Lime and Limestone Operations Segment Member
Business segments
Depreciation, depletion and amortization	5,630	5,039
Gross profit	24,058	14,197
Operating profit	19,909	10,562
Identifiable assets, at period end	235,693	218,522
Capital expenditures	5,451	5,517
Other
Business segments
Depreciation, depletion and amortization	126	144
Gross profit	(66)	270
Operating profit	(69)	270
Unallocated corporate assets and cash items
Business segments
Identifiable assets, at period end	152,052	106,225
Lime and limestone operations | Lime and Limestone Operations Segment Member
Business segments
Revenues	66,538	50,296
Others | Other
Business segments
Revenues	$ 239	$ 613