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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2019
Fair Value Disclosures [Abstract]  
Schedule of assets and liabilities measured at fair value on recurring basis
Assets and liabilities measured at fair value are based the valuation techniques identified in the table below. The valuation techniques are:

(a)
Market approach—prices and other relevant information generated by market transactions involving identical or comparable assets.

(b)
The valuations of the interest rate swaps intended to mitigate the Company’s interest rate risk are determined with the assistance of a third-party financial institution using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. This analysis utilizes observable market-based inputs, including interest rate curves and interest rate volatility and reflects the contractual terms of these instruments, including the period to maturity, as of April 1, 2019.

The following tables present financial assets and liabilities at December 31, 2019 and December 31, 2018 for which the Company measures fair value on a recurring basis, by level, within the fair value hierarchy:
 
December 31, 2019
Total
 
Level 1
 
Level 2
 
Level 3
 
Valuation
Technique
Assets
 
 
 
 
 
 
 
 
 
Money market mutual funds
$
29,907

 
$
29,907

 
$
—

 
$
—

 
(a)
December 31, 2018
Total
 
Level 1
 
Level 2
 
Level 3
 
Valuation
Technique
Assets
 
 
 
 
 
 
 
 
 
Money market mutual funds
$
25

 
$
25

 
$
—

 
$
—

 
(a)
Liabilities
 
 
 
 
 
 
 
 
 
Interest rate swaps
$
11

 
$
—

 
$
11

 
$
—

 
(b)