Income Taxes - Components of Deferred Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Reserve for receivables and inventory	$ 2,972	$ 2,532
Accrued compensation	2,209	2,641
Reserves and payables	2,340	3,101
Accrued post-retirement medical benefits	1,054	1,381
Net operating loss and credit carryforwards	2,827	2,260
Deferred compensation	1,139	1,041
Accrued qualified plan benefits	1,193	1,034
Accrued stock-based compensation	1,120	1,212
Deferred revenue	4,793	2,530
Operating lease liabilities	1,262	959
Research and development costs	2,625
Other	987	967
Total gross deferred tax assets	24,521	19,658
Less: valuation allowance	(2,690)	(2,169)
Total net deferred tax assets	21,831	17,489
Deferred tax liabilities:
Property, plant and equipment	4,454	5,056
Intangible assets	7,247	8,475
Prepaids	238	413
Operating lease assets	1,258	949
Other	525	452
Total deferred tax liabilities	13,722	15,345
Net deferred tax assets	$ 8,109	$ 2,144