Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency items, Balance at Beginning	$ (465,000)	$ (92,000)	$ (500,000)
Foreign currency items, Net current period change	77,000	(373,000)	408,000
Foreign currency items, Balance at End	(388,000)	(465,000)	(92,000)
Unrealized gain (losses) on investments, Balance at Beginning	(113,000)	(11,000)
Unrealized gain (losses) on investments, Net current period change	66,000	(102,000)	(11,000)
Unrealized gain (losses) on investments, Balance at End	(47,000)	(113,000)	(11,000)
Accumulated other comprehensive income, Balance at Beginning	(578,000)	(103,000)	(500,000)
Accumulated other comprehensive income, Net current period change	143,000	(475,000)	397,000
Accumulated other comprehensive income, Balance at End	$ (435,000)	$ (578,000)	$ (103,000)