Asset Retirement Obligation (Tables)

12 Months Ended

Dec. 31, 2018

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Asset Retirement Obligations [Table Text Block]

Following is a reconciliation of the aggregate retirement liability associated with the Company’s obligation to dismantle and remove the machinery and equipment associated with its lease:

Balance at January 1, 2017	$	65,578
Increase in present value of the obligation (accretion expense in the corresponding amount charged against earnings)		1,218
Balance at December 31, 2017	$	66,796
Increase in present value of the obligation (accretion expense in the corresponding amount charged against earnings)		2,431
Balance at December 31, 2018	$	69,227