INTERIM FINANCIAL REPORTING (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Total revenues	$ 12,307,000	$ 10,450,000	$ 27,523,000	$ 20,275,000
Change	$ 1,857,000	$ 1,857,000	$ 7,248,000	$ 7,248,000
Percent of change	18.00%	18.00%	36.00%	36.00%
Product Sales
Total revenues	$ 7,243,000	$ 6,699,000	$ 14,662,000	$ 13,550,000
Change	$ 544,000	$ 544,000	$ 1,112,000	$ 1,112,000
Percent of change	8.00%	8.00%	8.00%	8.00%
Product Sales | Soundwall Sales
Total revenues	$ 2,391,000	$ 2,200,000	$ 4,090,000	$ 4,087,000
Change	$ 191,000	$ 191,000	$ 3,000	$ 3,000
Percent of change	9.00%	9.00%	1.00%	1.00%
Product Sales | Architectural Panel Sales
Total revenues	$ 1,249,000	$ 766,000	$ 3,437,000	$ 1,533,000
Change	$ 483,000	$ 483,000	$ 1,904,000	$ 1,904,000
Percent of change	63.00%	63.00%	124.00%	124.00%
Product Sales | SlenderWall Sales
Total revenues	$ 220,000	$ 0	$ 220,000	$ 923,000
Change	$ 220,000	$ 220,000	$ (703,000)	$ (703,000)
Percent of change	100.00%	100.00%	(76.00%)	(76.00%)
Product Sales | Miscellaneous Wall Sales
Total revenues	$ 781,000	$ 1,128,000	$ 1,284,000	$ 2,031,000
Change	$ (347,000)	$ (347,000)	$ (747,000)	$ (747,000)
Percent of change	(31.00%)	(31.00%)	(37.00%)	(37.00%)
Product Sales | Barrier Sales
Total revenues	$ 1,066,000	$ 945,000	$ 2,557,000	$ 2,270,000
Change	$ 121,000	$ 121,000	$ 287,000	$ 287,000
Percent of change	13.00%	13.00%	13.00%	13.00%
Product Sales | Easi-Set and Easi-Span Building Sales
Total revenues	$ 848,000	$ 768,000	$ 1,602,000	$ 1,328,000
Change	$ 80,000	$ 80,000	$ 274,000	$ 274,000
Percent of change	10.00%	10.00%	21.00%	21.00%
Product Sales | Utility Sales
Total revenues	$ 469,000	$ 388,000	$ 736,000	$ 789,000
Change	$ 81,000	$ 81,000	$ (53,000)	$ (53,000)
Percent of change	21.00%	21.00%	(7.00%)	(7.00%)
Product Sales | Miscellaneous Sales
Total revenues	$ 219,000	$ 504,000	$ 736,000	$ 589,000
Change	$ (285,000)	$ (285,000)	$ 147,000	$ 147,000
Percent of change	(56.00%)	(56.00%)	25.00%	25.00%
Service Revenue
Total revenues	$ 5,064,000	$ 3,751,000	$ 12,861,000	$ 6,725,000
Change	$ 1,313,000	$ 1,313,000	$ 6,136,000	$ 6,136,000
Percent of change	35.00%	35.00%	91.00%	91.00%
Service Revenue | Barrier Rentals
Total revenues	$ 1,182,000	$ 907,000	$ 6,958,000	$ 1,650,000
Change	$ 275,000	$ 275,000	$ 5,308,000	$ 5,308,000
Percent of change	30.00%	30.00%	322.00%	322.00%
Service Revenue | Royalty Income
Total revenues	$ 692,000	$ 413,000	$ 1,112,000	$ 681,000
Change	$ 279,000	$ 279,000	$ 431,000	$ 431,000
Percent of change	68.00%	68.00%	63.00%	63.00%
Service Revenue | Shipping and Installation Revenue
Total revenues	$ 3,190,000	$ 2,431,000	$ 4,791,000	$ 4,394,000
Change	$ 759,000	$ 759,000	$ 397,000	$ 397,000
Percent of change	31.00%	31.00%	9.00%	9.00%