Business Segment and Geographic Area Information - Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Information [Line Items]
Sales	$ 22,544	$ 20,639
Depreciation	18	27
Amortization of Other Intangible Assets	68	66
Interest Expense	31	275
Segment Profit	3,158	2,456
Segment Assets	25,834	23,984
Expenditures for Segment Assets	1	1
Operating Segments [Member] | Foam [Member]
Segment Reporting Information [Line Items]
Sales	19,593	17,745
Depreciation	16	23
Amortization of Other Intangible Assets	60	57
Interest Expense	27	236
Segment Profit	2,646	2,022
Segment Assets	21,720	19,939
Expenditures for Segment Assets	1	1
Operating Segments [Member] | Coatings [Member]
Segment Reporting Information [Line Items]
Sales	2,951	2,894
Depreciation	2	4
Amortization of Other Intangible Assets	8	9
Interest Expense	4	39
Segment Profit	512	434
Segment Assets	4,114	4,045
Expenditures for Segment Assets	$ 0	$ 0