Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2015

Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The table below sets forth our fair value hierarchy for our financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2015 and December 31, 2014.



	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
September 30, 2015
Assets:
Promissory note	$	—	$	—	$	2,278	$	2,278
Convertible debt investment	—		—		34,050		34,050
Total assets	$	—	$	—	$	36,328	$	36,328
Liabilities:
Interest rate swaps	$	—	$	554	$	—	$	554
Contingent consideration for business acquisitions	—		—		900		900
Total liabilities	$	—	$	554	$	900	$	1,454
December 31, 2014
Assets:
Promissory note	$	—	$	—	$	2,137	$	2,137
Interest rate swaps	—		172		—		172
Convertible debt investment	—		—		12,250		12,250
Total assets	$	—	$	172	$	14,387	$	14,559
Liabilities:
Interest rate swaps	$	—	$	309	$	—	$	309
Contingent consideration for business acquisition	—		—		226		226
Total liabilities	$	—	$	309	$	226	$	535

Summary of Carrying Amount and Estimated Fair Value of Convertible Senior Notes

The carrying amount and estimated fair value of the Convertible Notes are as follows:



	September 30, 2015				December 31, 2014
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
1.25% convertible senior notes due 2019	$	218,176	$	258,998	$	212,852	$	261,903