Equity Method Investments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Earnings of equity method investment	$ 39,000
Investment in related party	$ 3,704,000
StockCross [Member]
Percentage of outstanding shares purchased by company	15.00%
Shares purchased	922,875
Per share price	$ 3.97
Earnings of equity method investment	$ 39,000
Investment in related party	$ 3,704,000