Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Measurements [Abstract]

Fair Value Measurement On A Recurring Basis

December 31 ,2016
	Carrying amount				Fair Value Measurement Using
	in balance sheet		Fair Value		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents:
Commercial paper	$	348	$	348	$	348	$	0	$	0
Treasury bills		7,427		7,427		7,427		0		0
Equity securities		0		0		0		0		0
Liabilities:
Contingent earn-out		195		195		0		0		195
December 31 ,2015
	Carrying amount				Fair Value Measurement Using
	in balance sheet		Fair Value		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents:
Money market	$	246	$	246	$	246	$	0	$	0
Commercial paper		247		247		247		0		0
Treasury bills		7,872		7,872		7,872		0		0
Equity securities		0		0		0		0		0
Liabilities:
Contingent earn-out		455		455		0		0		455

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Years Ended December 31,
	2016	2015
Beginning Balance	455	472
Credit to earnings	(260)	(17)
Ending Balance	195	455