Other Income (Details)	12 Months Ended
	Dec. 31, 2018 USD ($)
Other Income [Abstract]
Gain on equity accounted for investments	$ 4,935,000
Proceeds on disposal of equity investment	6,147,000
Additional proceeds after escrow conditions	$ 1,020,000
Escrow release conditions period	5 years
Contingent consideration on sale of equity	$ 1,700,000