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Fair Value Measurements
6 Months Ended
Jun. 30, 2016
Fair Value Disclosures [Abstract]  
Fair Value Measurements
8. Fair Value Measurements 

The recorded values of cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate their fair value based on their short-term nature. Long-term debt recorded in the Company’s condensed consolidated balance sheet at June 30, 2016 was $691.9 million (net of $17.1 million of unamortized deferred loan costs, see "Note 6. Long-Term Debt"). The fair value of the long-term debt at that same date was $711.0 million as determined using the quoted price technique, based on Level 2 inputs (significant observable inputs other than quoted prices for identical assets in active markets) from the fair value hierarchy, and included the yields of comparable companies with similar credit characteristics.

Related to its acquisitions the Company has obligations to pay contingent consideration in cash if certain performance targets are met. The fair value of the contingent consideration is determined using an expected present value technique. Expected cash flows are determined using the probability-weighted average of possible outcomes that would occur should certain financial metrics be reached. There is no market data available to use in valuing the contingent consideration, therefore, the Company develops its own assumptions related to the future financial performance of the businesses to evaluate the fair value of these liabilities. As such, the contingent consideration is classified within Level 3 inputs (unobservable inputs) from the fair value hierarchy. The fair value of the liability for contingent consideration is established at the time of the acquisition and finalized by the end of the measurement period. The fair value is then remeasured on a recurring basis with changes due to the accretion of the present value discount recorded in interest expense, and changes related to new developments in expected performance recorded in SG&A expenses.

The following table summarizes the balance of the contingent consideration and changes for the periods presented (in thousands):

 
 
Three Months Ended
 
Six Months Ended
 
June 30,
June 30,
 
2016
 
2015
 
2016
 
2015
Balance at beginning of period
$
(21,594
)
 
$
(3,000
)
 
$
(20,981
)
 
$
(3,000
)
Additions for acquisitions

 
(13,814
)
 

 
(13,814
)
Payments on contingent consideration
15,751

 

 
15,751

 

Fair value adjustment

 
(512
)
 
(613
)
 
(512
)
Balance at end of period
$
(5,843
)
 
$
(17,326
)
 
$
(5,843
)
 
$
(17,326
)

 
Certain assets and liabilities, such as goodwill, are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (e.g., when there is evidence of impairment). For the six months ended June 30, 2016 and 2015, no fair value adjustments were required for non-financial assets or liabilities.