Cash And Cash Equivalents And Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2016



	Cash, Cash Equivalents and Marketable Securities
	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value		Accrued Interest		Total Value
December 31, 2016
Cash	$	1,434	$	—	$	—	$	1,434	$	—	$	1,434
Cash equivalents		12,783		—		—		12,783		—		12,783
Commercial paper		4,497		—		—		4,497		—		4,497
Corporate securities		—		—		—		—		—		—
	$	18,714	$	—	$	—	$	18,714	$	—	$	18,714
Reported as:
Cash and cash equivalents	$	16,615		—		—	$	16,615	$	—	$	16,615
Marketable securities		2,099		—		—		2,099		—		2,099
	$	18,714	$	—	$	—	$	18,714	$	—	$	18,714
Maturities:
Matures in one year or less	$	18,714	$	—	$	—	$	18,714	$	—	$	18,714
Matures one to three years		—		—		—		—		—		—
	$	18,714	$	—	$	—	$	18,714	$	—	$	18,714

December 31, 2015
Cash	$	273	$	—	$	—	$	273	$	—	$	273
Cash equivalents		22,630		—		—		22,630		—		22,630
Commercial paper		8,396		1		(1)		8,396		—		8,396
	$	31,299	$	1	$	(1)	$	31,299	$	—	$	31,299
Reported as:
Cash and cash equivalents	$	31,299	$	1	$	(1)	$	31,299	$	—	$	31,299
Marketable securities		—		—		—		—		—		—
	$	31,299	$	1	$	(1)	$	31,299	$	—	$	31,299
Maturities:
Matures in one year or less	$	31,299	$	1	$	(1)	$	31,299	$	—	$	31,299
Matures one to three years		—		—		—		—		—		—
	$	31,299	$	1	$	(1)	$	31,299	$	—	$	31,299