Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Liabilities Measured at Fair Value on a Recurring Basis

Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2015

	Quoted Prices in Active  Markets for Identical Assets (Level 1)		Significant Other Observable  Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)		Balance as of December 31, 2015
	(in thousands)
Liabilities
Contingent obligation due selling unitholders of Cogent	$	—	$	—	$	13,647	$	13,647
Total	$	—	$	—	$	13,647	$	13,647

Changes in Level 3 Measured at Fair Value

Changes in Level 3 liabilities measured at fair value on a recurring basis for the year ended December 31, 2015 are as follows:

	Opening Balance as of January 1, 2015		Total realized and unrealized gains (losses) included in Net Income			Unrealized gains (losses) included in Other Comprehensive Income		Purchases		Issues		Sales		Settlements		Closing Balance as of December 31, 2015		Unrealized gains (losses) for Level 3 liabilities outstanding at December 31, 2015
	(in thousands)
Liabilities
Contingent obligation due selling unitholders of Cogent	$	—	$	(503	)	$	—	$	13,144	$	—	$	—	$	—	$	13,647	$	(503	)
Total	$	—	$	(503	)	$	—	$	13,144	$	—	$	—	$	—	$	13,647	$	(503	)

Quantitative Information

The following table presents quantitative information about the significant unobservable inputs utilized by the Company in the fair value measure of Level 3 liabilities measured at fair value on a recurring basis, as of December 31, 2015:

	Fair Value as of December 31, 2015		Valuation Technique(s)	Unobservable  Input(s)		Range (Weighted Average)
	(in thousands)
Liabilities
Contingent obligation due selling unitholders of Cogent	$	13,647	Present value of expected payments	Discount rate		12	%
				Forecast revenue	(a)

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(a) The Company's estimate of contingent consideration as of December 31, 2015 was principally based on the acquired business' projected revenue generation from April 1, 2015 through March 31, 2017 and April 1, 2017 through March 31, 2019.