Income Taxes (Reconciliation of the Federal Statutory and Effective Income Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Amount
Income before income tax benefit	$ 13,144	$ 33,646
Statutory taxes	2,760	7,066
State and local income taxes, net of federal income tax effect	339	556
Research and development credit	(604)
Nondeductible compensation	856
Nondeductible meals	137
Changes in unrecognized tax benefits	(57)
Percentage depletion	(5,398)	(4,683)
Deferred tax adjustments	(2,429)
Other, net	(34)	(892)
Income tax benefit at the effective income tax rate	$ (4,430)	$ (95)
Percent
Statutory taxes	21.00%	21.00%
State and local income taxes, net of federal income tax effect	2.60%
Research and development credit	(4.60%)
Nondeductible compensation	6.50%
Nondeductible meals	1.00%
Changes in unrecognized tax benefits	(0.40%)
Percentage depletion	(41.10%)
Deferred tax adjustments	(18.50%)
Other, net	(0.30%)
Income tax benefit at the effective income tax rate	(33.70%)	(0.30%)