Basis of Presentation and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Basis of Presentation and Summary of Significant Accounting Policies [Abstract]

Schedule of Deferred Revenue

Activity under the August 2013 Contract Settlement was as follows:

Deferred Revenue, December 31, 2016	$	4,000
Less: Amount amortized as revenue		1,125
Deferred Revenue, September 30, 2017	$	2,875

Cash and Available-for-Sale Securities Adjusted Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value by Significant Investment Category

The following tables show the adjusted cost, gross unrealized gains, gross unrealized losses and fair value of our securities by significant investment category as of September 30, 2017, and December 31, 2016.

	September 30, 2017
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Cash and Cash Equivalents		Investments Available for Sale
Cash	$	1,427	$	-	$	-		$	1,427	$	1,427	$	-
Level 1:
Mutual funds		220		-		-			220		220		-
U.S. agency securities		2,667		-		(2	)		2,665		-		2,665
		2,887		-		(2	)		2,885		220		2,665
Total	$	4,314	$	-	$	(2	)	$	4,312	$	1,647	$	2,665

	December 31, 2016
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Cash and Cash Equivalents		Investments Available for Sale
Cash	$	3,432	$	—	$	—		$	3,432	$	3,432	$	—
Level 1:
Mutual funds		3,195		—		—			3,195		3,195		—
U.S. government securities		1,254		—		—			1,254		—		1,254
U.S. agency securities		7,996		2		(3	)		7,995		—		7,995
		12,445		2		(3	)		12,444		3,195		9,249
Total	$	15,877	$	2	$	(3	)	$	15,876	$	6,627	$	9,249