Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Loss (Details)

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Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]    
Foreign currency items, Balance at Beginning $ (388,000) $ (465,000)
Foreign currency items, Net current period change (12,000) (137,000)
Foreign currency items, Balance at End (400,000) (602,000)
Unrealized gain (losses) on investments, Balance at Beginning (47,000) (113,000)
Unrealized gain (losses) on investments, Net current period change 47,000 (60,000)
Unrealized gain (losses) on investments, Balance at End (173,000)
Accumulated other comprehensive income, Balance at Beginning (435,000) (578,000)
Accumulated other comprehensive income, Net current period change 35,000 (197,000)
Accumulated other comprehensive income, Balance at End $ (400,000) $ (775,000)