General form of registration statement for all companies including face-amount certificate companies

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2)

v3.21.2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Product Information [Line Items]      
Total revenues $ 172,955 $ 166,031 $ 210,751
Product Sales [Member]      
Product Information [Line Items]      
Total revenues 131,105 121,741 185,092
Nonrecurring Engineering [Member]      
Product Information [Line Items]      
Total revenues 16,007 21,713 14,291
Product Maintenance Contracts [Member]      
Product Information [Line Items]      
Total revenues 11,796 9,221 2,153
Professional Service Contracts [Member]      
Product Information [Line Items]      
Total revenues 10,814 7,473 6,796
Software Licenses [Member]      
Product Information [Line Items]      
Total revenues 2,757 5,607 2,012
Other [Member]      
Product Information [Line Items]      
Total revenues $ 476 $ 276 $ 407