Inventories (Tables)

12 Months Ended

Dec. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following at December 31:

	2013		2012
Raw materials	$	1,174,945	$	346,613
Work-in-process		532,044		408,491
Finished goods		137,614		159,971
		1,844,603		915,075
Reserve for obsolete inventory		(134,863)		(100,000)
	$	1,709,740	$	815,075