Reportable Segment (Details) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2025 USD ($) segment	Jun. 30, 2024 USD ($)
Business segments
Number of reportable segment | segment					1
Revenues	$ 91,518		$ 76,545		$ 182,771	$ 148,232
Depreciation, depletion and amortization	6,108		5,884		12,158	11,863
Selling, general and administrative expenses	6,189		4,882		12,451	9,730
Other (income) expense, net	(3,098)		(2,786)		(6,189)	(5,326)
Income tax expense	7,956		6,669		16,828	12,529
Net income	30,831	$ 34,113	26,057	$ 22,439	64,944	48,496
Lime and limestone operations
Business segments
Revenues	91,518		76,545		182,771	148,232
Fuel, energy, and transportation	24,127		20,190		44,392	38,501
Depreciation, depletion and amortization	6,108		5,884		12,158	11,863
Outside services, maintenance, and supplies	9,110		6,809		17,465	13,031
Personnel expenses	8,295		7,653		16,235	15,324
Other cost of revenues	2,000		1,187		4,487	4,084
Selling, general and administrative expenses	6,189		4,882		12,451	9,730
Other (income) expense, net	(3,098)		(2,786)		(6,189)	(5,326)
Income tax expense	7,956		6,669		16,828	12,529
Net income	$ 30,831		$ 26,057		$ 64,944	$ 48,496