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FAIR VALUE MEASUREMENTS
3 Months Ended
Mar. 31, 2022
FAIR VALUE MEASUREMENTS [Abstract]  
Fair Value Measurements NOTE 6. FAIR VALUE MEASUREMENTS

Assets and liabilities measured at fair value on a recurring basis included the following:

(In thousands)

Balance at

March 31,

2022

Level 1

Level 2

Level 3

Assets:

Cash equivalents

$

61,945

$

44,491

$

17,454

$

Municipal bonds

140,383

140,383

Corporate debt securities

480,419

480,419

Commercial paper

36,209

36,209

Asset-backed securities

106,720

106,720

Government, federal agency, and other sovereign obligations

26,655

26,655

Liabilities:

Business acquisition liabilities

68,036

68,036

(In thousands)

Balance at

December 31,

2021

Level 1

Level 2

Level 3

Assets:

Cash equivalents

$

26,684

$

3,768

$

22,916

$

Municipal bonds

157,247

157,247

Corporate debt securities

430,996

430,996

Commercial paper

38,253

38,253

Asset-backed securities

140,651

140,651

Government, federal agency, and other sovereign obligations

45,706

45,706

Liabilities:

Business acquisition liabilities

70,525

70,525

Our marketable securities are classified as Level 2 within the fair value hierarchy, as we measure their fair value using market prices for similar instruments and inputs such as actual trade data, benchmark yields, broker/dealer quotes and other similar data obtained from quoted market prices or independent pricing vendors.

Assets and Liabilities That Are Measured at Fair Value on a Nonrecurring Basis

Fair value of the revenue-based business acquisition liabilities was determined using a discounted cash flow model and an option pricing model. The significant inputs of such models are not observable in the market, such as certain financial metric growth rates, volatility and discount rates, market price risk adjustment, projections associated with the applicable milestone, the interest rate, and the related probabilities and payment structure in the contingent consideration arrangement.

The following are the significant unobservable inputs used in the two valuation techniques:

Unobservable input

Range

Weighted Average*

Revenue risk premium

2.4%

-

4.9%

3.0%

Revenue volatility

14.0%

-

15.8%

14.8%

Discount rate

1.2%

-

8.5%

3.3%

Projected year of payment

2022

-

2031

* The weighted average rates were calculated based on the relative fair value of each business acquisition liability.

The change in the carrying value of the business acquisition liabilities during the three months ended March 31, 2022 and 2021, respectively included the following:

Three Months Ended

March 31,

(In thousands)

2022

2021

Beginning balance

$

70,525

$

37,270

Contingent cash payments

(2,412)

(1,492)

Contingent RSU grants

(196)

(163)

Changes in fair value of business acquisition liabilities

(263)

258

Contractual payable reclassification

382

148

Ending balance

$

68,036

$

36,021

Changes in the fair value of business acquisition liabilities are driven by changes in market conditions and the achievement of certain performance conditions.