Reportable Segment (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) segment	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Business segments
Number of business segments | segment			1
Revenues	$ 73,983	$ 60,492	$ 140,760	$ 111,401
Depreciation, depletion and amortization	5,912	5,473	11,668	10,656
Gross profit	27,131	16,481	51,123	30,948
Operating profit	22,812	12,633	42,652	23,465
Identifiable assets, at period end	402,372	336,733	402,372	336,733	$ 367,772
Capital expenditures	9,981	5,968	15,432	11,485
Operating Segment | Lime and Limestone Operations Segment Member
Business segments
Depreciation, depletion and amortization	5,786	5,330	11,416	10,369
Gross profit	27,121	15,975	51,179	30,172
Operating profit	22,802	12,127	42,708	22,689
Identifiable assets, at period end	241,953	223,101	241,953	223,101
Capital expenditures	9,981	5,968	15,432	11,485
Unallocated corporate assets and cash items
Business segments
Depreciation, depletion and amortization	126	143	252	287
Gross profit	10	506	(56)	776
Operating profit	10	506	(56)	776
Identifiable assets, at period end	160,419	113,632	160,419	113,632
Lime and limestone operations | Operating Segment | Lime and Limestone Operations Segment Member
Business segments
Revenues	73,688	59,613	140,226	109,909
Others | Unallocated corporate assets and cash items
Business segments
Revenues	$ 295	$ 879	$ 534	$ 1,492