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Fair Value of Financial Instruments
12 Months Ended
Dec. 31, 2019
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments Fair Value of Financial Instruments
ASC 820-10 defines fair value as the amount that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. ASC 820-10 also establishes a fair value hierarchy that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. ASC 820-10 describes the following three levels of inputs that may be used:
Level 1: Quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets and liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs.
Level 2: Observable prices that are based on inputs not quoted on active markets but corroborated by market data.
Level 3: Unobservable inputs when there is little or no market data available, thereby requiring an entity to develop its own assumptions. The fair value hierarchy gives the lowest priority to Level 3 inputs.  
Although management believed its valuation methods were appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could have resulted in a different fair value measurement at the reporting date.
The following table presents the assets and liabilities that are measured and recognized at fair value on a recurring basis classified under the appropriate level of the fair value hierarchy as of December 31, 2019 and December 31, 2018:
 
December 31, 2019
 
December 31, 2018
Level 2 Measurements
 
 
 
Interest rate swaps (1)
$
18

 
$
1,859



(1) Included in other assets on our consolidated balance sheets.

As of December 31, 2019, the fair value of the 1.75% Convertible Senior Notes was approximately $309,641. The fair value was determined based on the quoted price for the Convertible Senior Notes in an inactive market on the last trading day of the reporting period and is classified as Level 2 in the fair value hierarchy.

Fair Value of Other Financial Instruments
The carrying amounts of our other financial instruments, including cash and cash equivalents, accounts receivable, and accounts payable, approximate fair value and are classified as Level 1 because of their short maturities. We believe the fair value of our 2018 Credit Facility at December 31, 2019 and December 31, 2018 was approximately the same as its carrying amount as market conditions, including available interest rates, credit spread relative to our credit rating, and illiquidity, remain relatively unchanged from the issuance date of our debt obligations for a similar debt instrument and are classified as Level 3 within the fair value hierarchy.
As of December 31, 2019, we did not have any other assets or liabilities that are measured and recognized at fair value on a recurring basis.