Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Future minimum sublease rental payments [Table Text Block]

	Commitment
2018	$	97,000
2019		233,000
2020		265,000
2021		227,000
	$	822,000

Other Commitments [Table Text Block]

The following table shows the aggregate commitment by year:

	Commitment
2018	$	405,000
2019		142,000
	$	547,000