Revenue - Schedule of Disaggregation of Revenue (Major Source) (Details) - USD ($) $ in Thousands | 3 Months Ended |
Mar. 31, 2020 | Mar. 31, 2019 |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | $ 13,575 | $ 14,306 |
Strong Entertainment [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 7,315 | 7,601 |
Convergent [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 4,962 | 5,535 |
Strong Outdoor [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 1,197 | 1,093 |
Other [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 101 | 77 |
Product [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 6,404 | 5,560 |
Product [Member] | Screen System Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 2,956 | 2,819 |
Product [Member] | Digital Equipment Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 2,821 | 2,109 |
Product [Member] | Extended Warranty Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 159 | 234 |
Product [Member] | Other Product Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 468 | 398 |
Product [Member] | Strong Entertainment [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 5,232 | 4,935 |
Product [Member] | Strong Entertainment [Member] | Screen System Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 2,956 | 2,819 |
Product [Member] | Strong Entertainment [Member] | Digital Equipment Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 1,649 | 1,484 |
Product [Member] | Strong Entertainment [Member] | Other Product Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 468 | 398 |
Product [Member] | Convergent [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 1,172 | 625 |
Product [Member] | Convergent [Member] | Screen System Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Convergent [Member] | Digital Equipment Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 1,172 | 625 |
Product [Member] | Convergent [Member] | Extended Warranty Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Convergent [Member] | Other Product Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Strong Outdoor [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Strong Outdoor [Member] | Screen System Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Strong Outdoor [Member] | Digital Equipment Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Strong Outdoor [Member] | Extended Warranty Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Strong Outdoor [Member] | Other Product Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Other [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Other [Member] | Screen System Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Other [Member] | Digital Equipment Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Other [Member] | Extended Warranty Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Other [Member] | Other Product Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Product [Member] | Entertainment [Member] | Extended Warranty Sales [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 159 | 234 |
Service [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 7,171 | 8,746 |
Service [Member] | Field Maintenance and Monitoring Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 5,246 | 4,793 |
Service [Member] | Installation Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 614 | 2,788 |
Service [Member] | Advertising [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 1,169 | 1,040 |
Service [Member] | Other Service Revenues [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 142 | 125 |
Service [Member] | Strong Entertainment [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 2,083 | 2,666 |
Service [Member] | Strong Entertainment [Member] | Field Maintenance and Monitoring Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 1,804 | 1,967 |
Service [Member] | Strong Entertainment [Member] | Installation Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 257 | 670 |
Service [Member] | Strong Entertainment [Member] | Advertising [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Service [Member] | Strong Entertainment [Member] | Other Service Revenues [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 22 | 29 |
Service [Member] | Convergent [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 3,790 | 4,910 |
Service [Member] | Convergent [Member] | Field Maintenance and Monitoring Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 3,414 | 2,773 |
Service [Member] | Convergent [Member] | Installation Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 357 | 2,118 |
Service [Member] | Convergent [Member] | Advertising [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Service [Member] | Convergent [Member] | Other Service Revenues [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 19 | 19 |
Service [Member] | Strong Outdoor [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 1,197 | 1,093 |
Service [Member] | Strong Outdoor [Member] | Field Maintenance and Monitoring Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 28 | 53 |
Service [Member] | Strong Outdoor [Member] | Installation Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Service [Member] | Strong Outdoor [Member] | Advertising [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 1,169 | 1,040 |
Service [Member] | Strong Outdoor [Member] | Other Service Revenues [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Service [Member] | Other [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | 101 | 77 |
Service [Member] | Other [Member] | Field Maintenance and Monitoring Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Service [Member] | Other [Member] | Installation Services [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Service [Member] | Other [Member] | Advertising [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | | |
Service [Member] | Other [Member] | Other Service Revenues [Member] | | |
Disaggregation of Revenue [Line Items] | | |
Total net revenues | $ 101 | $ 77 |