Business Segment and Geographic Area Information - Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Sales	$ 26,255	$ 20,091	$ 48,799	$ 40,730
Depreciation	19	25	37	52
Amortization of Other Intangible Assets	52	63	120	129
Interest Expense	28	266	59	541
Segment Profit	3,973	3,388	7,131	5,843
Segment Assets	27,390	23,776	27,390	23,776
Expenditures for Segment Assets	231	176	232	178
Operating Segments [Member] | Foam [Member]
Segment Reporting Information [Line Items]
Sales	22,148	16,624	41,741	34,369
Depreciation	16	21	32	44
Amortization of Other Intangible Assets	44	52	104	109
Interest Expense	24	220	51	456
Segment Profit	3,251	2,777	5,897	4,804
Segment Assets	22,532	19,166	22,532	19,166
Expenditures for Segment Assets	195	146	196	150
Operating Segments [Member] | Coatings [Member]
Segment Reporting Information [Line Items]
Sales	4,107	3,467	7,058	6,361
Depreciation	3	4	5	8
Amortization of Other Intangible Assets	8	11	16	20
Interest Expense	4	46	8	85
Segment Profit	722	611	1,234	1,039
Segment Assets	4,858	4,610	4,858	4,610
Expenditures for Segment Assets	$ 36	$ 30	$ 36	$ 28