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Interim Financial Reporting (Tables)
 6 Months Ended
Jun. 30, 2018
INTERIM FINANCIAL REPORTING [Abstract]  
Disaggregation of Revenue
In the following table, revenue is disaggregated by primary sources of revenue (in thousands):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2018
2017
Change
% of Change
 
2018
2017
Change
% of Change
Product Sales:
 
 
 
 
 
 
 
 
 
Soundwall Sales
$
2,525

$
1,429

$
1,096

77%
 
$
5,005

$
2,656

$
2,349

88%
Architectural Panel Sales
245

—

245

100%
 
457

18

439

2,439%
SlenderWall Sales
1,422

—

1,422

100%
 
2,565

—

2,565

100%
Miscellaneous Wall Sales
267

709

(442
)
(62)%
 
759

1,372

(613
)
(45)%
Barrier Sales
1,590

3,912

(2,322
)
(59)%
 
3,875

6,069

(2,194
)
(36)%
Easi-Set and Easi-Span Building Sales
560

1,061

(501
)
(47)%
 
1,062

1,397

(335
)
(24)%
Utility and Farm Product Sales
246

350

(104
)
(30)%
 
460

808

(348
)
(43)%
Miscellaneous Product Sales
88

150

(62
)
(41)%
 
213

239

(26
)
(11)%
Total Product Sales
6,943

7,611

(668
)
(9)%
 
14,396

12,559

1,837

15%
Barrier Rentals
340

302

38

13%
 
649

2,825

(2,176
)
(77)%
Royalty Income
506

473

33

7%
 
727

904

(177
)
(20)%
Shipping and Installation Revenue
2,044

2,342

(298
)
(13)%
 
3,186

3,937

(751
)
(19)%
Total Service Revenue
2,890

3,117

(227
)
(7)%
 
4,562

7,666

(3,104
)
(40)%
 
 
 
 
 
 
 
 
 
 
Total Revenue
$
9,833

$
10,728

$
(895
)
(8)%
 
$
18,958

$
20,225

$
(1,267
)
(6)%