Business Segments - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income from Operations
Operating profit	$ 4,471	$ 15,633
Other income - net	3,075	2,110
Income from continuing operations before income taxes	4,590	13,982
Assets
Segment Assets	342,595	370,395
Depreciation/Amortization
Depreciation/Amortization	13,887	13,579
Expenditures for Long-Lived Assets
Expenditures for Long-Lived Assets	4,620	9,179
Operating Segments
Income from Operations
Operating profit	13,308	21,696
Interest expense - net	(2,956)	(3,761)
Other income - net	3,075	2,110
Corporate expense and other unallocated charges	(8,837)	(6,063)
Income from continuing operations before income taxes	4,590	13,982
Assets
Segment Assets	278,725	299,004
Depreciation/Amortization
Depreciation/Amortization	12,543	12,222
Expenditures for Long-Lived Assets
Expenditures for Long-Lived Assets	3,600	8,504
Unallocated corporate assets
Assets
Segment Assets	63,870	71,391
Depreciation/Amortization
Depreciation/Amortization	1,344	1,357
Expenditures for Long-Lived Assets
Expenditures for Long-Lived Assets	$ 1,020	$ 675