Business Segments - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Other (expense) income - net	$ (70)	$ 2,306	$ (129)	$ 1,700
Income from continuing operations before income taxes	3,993	9,072	2,402	9,009
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Profit for reportable segments	8,310	10,672	10,176	13,448
Interest expense - net	(861)	(1,089)	(1,732)	(1,901)
Other (expense) income - net	256	2,292	197	2,421
Unallocated corporate expenses and other unallocated charges	(3,712)	(2,803)	(6,239)	(4,959)
Income from continuing operations before income taxes	$ 3,993	$ 9,072	$ 2,402	$ 9,009