Facility Exit Costs (Details Textual) - Facility Exit Costs [Member] - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2016	Sep. 30, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 648,000
Restructuring Reserve		$ 633,000	$ 783,000
Restructuring Reserve, Current		92,000
Restructuring Reserve, Noncurrent		$ 541,000
Facility Exit Costs Payable period		approximately 4.5 years, through February 2022