Reportable Segment (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Business segments
Number of business segments | segment	1
Revenues	$ 236,150	$ 189,255	$ 160,704
Depreciation, depletion and amortization	21,921	20,630	19,379
Gross profit	70,342	59,260	47,587
Operating profit	54,783	46,417	33,869
Assets	367,772	316,196	279,098
Capital expenditures	26,815	29,914	17,133
Impairment of long-lived assets			1,550
Unallocated corporate assets and cash items
Business segments
Assets	138,788	111,381	88,152
Lime and Limestone Operations Segment Member
Business segments
Depreciation, depletion and amortization	21,368	20,052	18,664
Gross profit	68,951	58,651	47,983
Operating profit	53,404	45,835	35,815
Assets	228,984	204,815	190,946
Capital expenditures	26,815	29,914	17,133
Other
Business segments
Depreciation, depletion and amortization	553	578	715
Gross profit	1,391	609	(396)
Operating profit	1,379	582	(1,946)
Lime and limestone operations | Lime and Limestone Operations Segment Member
Business segments
Revenues	233,421	187,365	159,707
Others | Other
Business segments
Revenues	$ 2,729	$ 1,890	$ 997