Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

Our financial assets and (liabilities) carried at fair value measured on a recurring basis as of December 31, 2013 and 2012, consisted of the following (in thousands):

				Fair Value Measurements Using
	Total Fair			Quoted prices in		Significant other			Significant
	Value at			active markets		observable inputs			Unobservable inputs
Description	December 31, 2013			(Level 1)		(Level 2)			(Level 3)
Interest rate swap (1)	$	1,203		$	—	$	1,203		$	—
				Fair Value Measurements Using
	Total Fair			Quoted prices in		Significant other			Significant
	Value at			active markets		observable inputs			Unobservable inputs
Description	December 31, 2012			(Level 1)		(Level 2)			(Level 3)
Interest rate swap (1)	$	(1,788	)	$	—	$	(1,788	)	$	—

(1)    The fair value of the interest rate swap is determined based on forward yield curves.

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

Changes in the fair value of our contingent consideration liability during the years ended December 31, 2013 and 2012, consisted of the following (in thousands):

	2013			2012
Beginning balance	$	6,697		$	1,290
Contingent consideration liability recorded as the result of acquisitions (see Note 2)	—			4,704
Initial purchase price adjustments finalized over the period (see Note 2)	—			280
Fair value adjustments recorded to (income) expense during the period	(4,094		)	480
Contingent payments made	(77		)	(57		)
Ending balance	$	2,526		$	6,697

Fair Value Inputs, Liabilities, Quantitative Information

The recurring Level 3 measurement of our contingent consideration liability includes the following significant unobservable inputs at December 31, 2013 and 2012 (amount in thousands):

Contingent consideration liability	Fair value at December 31, 2013		Valuation technique	Unobservable inputs	Range
Revenue-based payments	$	2,282	Discounted cash flow	Discount rate	11% - 15%
				Probability of milestone payment	90%
				Projected year of payments	2014-2028
Other payments	$	244	Discounted cash flow	Discount rate	5.4%
				Probability of milestone payment	100%
				Projected year of payments	2014-2016
Contingent consideration liability	Fair value at December 31, 2012		Valuation technique	Unobservable inputs	Range
Revenue-based payments	$	6,370	Discounted cash flow	Discount rate	10% - 14.5%
				Probability of milestone payment	90%
				Projected year of payments	2013-2028
Other payments	$	327	Discounted cash flow	Discount rate	4.5%
				Probability of milestone payment	100%
				Projected year of payments	2013-2015