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Fair Value Measurements
9 Months Ended
Sep. 30, 2019
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements

The following table presents our assets and liabilities measured at fair value on a recurring basis (in thousands):
    
 
Fair Value Measurements on a Recurring Basis as of
September 30, 2019
Fair value measurements in:
Level 1
 
Level 2
 
Level 3
 
Total
Assets:
 
 
 
 
 
 
 
Money market accounts
$
137,052

 
$

 
$

 
$
137,052

Total
$
137,052

 
$

 
$

 
$
137,052

Liabilities:
 
 
 
 
 
 
 
Subsidiary unit awards
$

 
$

 
$
185

 
$
185

Total
$

 
$

 
$
185

 
$
185

    
 
Fair Value Measurements on a Recurring Basis as of
December 31, 2018
Fair value measurements in:
Level 1
 
Level 2
 
Level 3
 
Total
Assets:
 
 
 
 
 
 
 
Money market accounts
$
117,392

 
$

 
$

 
$
117,392

Total
$
117,392

 
$

 
$

 
$
117,392

Liabilities:
 
 
 
 
 
 
 
Subsidiary unit awards
$

 
$

 
$
385

 
$
385

Total
$

 
$

 
$
385

 
$
385



The following table summarizes the change in fair value of the Level 3 liabilities for subsidiary unit awards with significant unobservable inputs (in thousands):    
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
 
2019
 
2018
 
2019
 
2018
Beginning of period balance
$
185

 
$
389

 
$
385

 
$
3,160

Total losses included in earnings

 

 

 
31

Settlements

 

 
(200
)
 
(2,802
)
End of period balance
$
185

 
$
389

 
$
185

 
$
389


    
The money market accounts are included in our cash and cash equivalents in our condensed consolidated balance sheets. Our money market assets are valued using quoted prices in active markets.

The liability for the subsidiary unit awards relates to agreements established with employees of our subsidiaries for cash awards contingent upon the subsidiary companies meeting certain financial milestones such as revenue, working capital, EBITDA and EBITDA margin. We account for these subsidiary awards using fair value and establish liabilities for the future payment for the repurchase of subsidiary units under the terms of the agreements based on estimating revenue, working capital, EBITDA and EBITDA margin of the subsidiary units over the periods of the awards through the anticipated repurchase dates. We
estimated the fair value of each liability by using a Monte Carlo simulation model for determining each of the projected measures by using an expected distribution of potential outcomes. The fair value of each liability is calculated with thousands of projected outcomes, the results of which are averaged and then discounted to estimate the present value. At each reporting date until the respective payment dates, we will remeasure these liabilities, using the same valuation approach based on the applicable subsidiary's revenue and future collection of financed customer receivables, the unobservable inputs, and we will record any changes in the employee's compensation expense. Some of the awards are subject to the employees' continued employment and therefore recorded on a straight-line basis over the remaining service period. During the nine months ended September 30, 2019, we settled $0.2 million of the liability related to the subsidiary unit awards. The remaining liability balances are included in either accounts payable, accrued expenses and other current liabilities or other liabilities in our condensed consolidated balance sheets (see Note 12).

We monitor the availability of observable market data to assess the appropriate classification of financial instruments within the fair value hierarchy. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the beginning of the reporting period. There were no transfers between Levels 1, 2 or 3 during the three and nine months ended September 30, 2019 and 2018. We also monitor the value of the investments for other-than-temporary impairment on a quarterly basis. No other-than-temporary impairments occurred during the three and nine months ended September 30, 2019 and 2018.