Quarterly report pursuant to Section 13 or 15(d)

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

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Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Mar. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]          
Foreign currency items, Balance at Beginning     $ (465,000) $ (388,000) $ (465,000)
Foreign currency items, Net current period change       (58,000) 52,000
Foreign currency items, Balance at End $ (446,000) $ (413,000)   (446,000) (413,000)
Unrealized gain (losses) on investments, Balance at Beginning     (113,000) (47,000) (113,000)
Unrealized gain (losses) on investments, Net current period change   (12,000) (60,000) 47,000 (72,000)
Unrealized gain (losses) on investments, Balance at End (185,000)   (185,000)
Accumulated other comprehensive income, Balance at Beginning     $ (578,000) (435,000) (578,000)
Accumulated other comprehensive income, Net current period change (46,000) 177,000   (11,000) (20,000)
Accumulated other comprehensive income, Balance at End $ (446,000) $ (598,000)   $ (446,000) $ (598,000)