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Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Total revenues	$ 43,862	$ 46,691
Change	$ (2,829)
Percent of change	(6.00%)
Product Sales
Total revenues	$ 26,776	32,228
Change	$ (5,452)
Percent of change	(17.00%)
Product Sales | Soundwall Sales
Total revenues	$ 7,499	7,736
Change	$ (237)
Percent of change	(3.00%)
Product Sales | Architectural Sales
Total revenues	$ 3,668	1,104
Change	$ 2,564
Percent of change	232.00%
Product Sales | SlenderWall Sales
Total revenues	$ 948	5,063
Change	$ (4,115)
Percent of change	(81.00%)
Product Sales | Miscellaneous Wall Sales
Total revenues	$ 3,371	1,685
Change	$ 1,686
Percent of change	100.00%
Product Sales | Barrier Sales
Total revenues	$ 5,507	8,582
Change	$ (3,075)
Percent of change	(36.00%)
Product Sales | Easi-Set and Easi-Span Building Sales
Total revenues	$ 2,935	5,937
Change	$ (3,002)
Percent of change	(51.00%)
Product Sales | Utility Sales
Total revenues	$ 1,310	1,608
Change	$ (298)
Percent of change	(19.00%)
Product Sales | Miscellaneous Sales
Total revenues	$ 1,538	513
Change	$ 1,025
Percent of change	199.00%
Service Revenue
Total revenues	$ 17,086	14,463
Change	$ 2,623
Percent of change	18.00%
Service Revenue | Barrier Rentals
Total revenues	$ 6,879	2,488
Change	$ 4,391
Percent of change	176.00%
Service Revenue | Royalty Income
Total revenues	$ 1,688	1,672
Change	$ 16
Percent of change	1.00%
Service Revenue | Shipping and Installation Revenue
Total revenues	$ 8,519	$ 10,303
Change	$ (1,784)
Percent of change	(17.00%)

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