Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Summary of Significant Accounting Policies [Abstract]

Activity under August 2013 Contract Settlement

Activity under the August 2013 Contract Settlement was as follows:

	2018			2017		2016
Deferred Revenue, beginning of year	$	2,500		$	4,000	$	3,000
ASC 606 Adjustment		(2,500	)		—		—
Payment received		—			—		2,500
Less: Amount amortized as revenue		—			1,500		1,500
Deferred Revenue, end of year	$	—		$	2,500	$	4,000