Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Schedule Of Fair Values Of Financial Instruments Measured On Recurring Basis

The following tables present the fair values of the Company's financial assets or liabilities that are measured at fair value on a recurring basis (in thousands):

September 30, 2016	Level 1		Level 2		Level 3		Fair Value
Assets:
Cash equivalents:
Money market and other funds	$	80,405	$	—	$	—	$	80,405
Time deposits	—		73		—		73
Certificates of deposit	—		63		—		63
Variable Rate Demand Notes	—		2,400		—		2,400
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	—		19,060		—		19,060
Debt securities issued by states of the U.S. and political subdivisions of the states	—		5,531		—		5,531
Corporate debt securities	—		66,275		—		66,275
Total assets measured at fair value	$	80,405	$	93,402	$	—	$	173,807
Liabilities:
Contingent consideration	$	—	$	—	$	13,661	$	13,661
Contingent interest derivative	—		1,450		—		1,450
Total liabilities measured at fair value	$	—	$	1,450	$	13,661	$	15,111
December 31, 2015	Level 1		Level 2		Level 3		Fair Value
Assets:
Cash equivalents:
Money market and other funds	$	46,867	$	—	$	—	$	46,867
Time deposits	—		3,004		—		3,004
Certificates of deposit	—		60		—		60
Equity securities	22,654		—		—		22,654
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	—		40,652		—		40,652
Debt securities issued by states of the U.S. and political subdivisions of the states	—		6,103		—		6,103
Corporate debt securities	—		88,749		—		88,749
Total assets measured at fair value	$	69,521	$	138,568	$	—	$	208,089
Liabilities:
Contingent consideration	$	—	$	—	$	30,600	$	30,600
Contingent interest derivative	—		1,450		—		1,450
Total liabilities measured at fair value	$	—	$	1,450	$	30,600	$	32,050

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

The following table presents a reconciliation of the Company's Level 3 financial assets or liabilities that are measured at fair value on a recurring basis (in thousands):

	Level 3			Affected line item in the Statement of Income
Balance as of January 1, 2016	$	30,600
Total fair value adjustments reported in earnings	1,061			General and administrative
Contingent consideration payments	(18,000		)	Not applicable
Balance as of September 30, 2016	$	13,661

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The following table presents a reconciliation of the Company's derivative instruments (in thousands):

	Amount		Affected line item in the Statement of Income
Derivative Liabilities:
Level 2:
Balance as of January 1, 2016	$	1,450
Total fair value adjustments reported in earnings	—
Balance as of September 30, 2016	$	1,450