ASC 820, “Fair Value Measurements and Disclosures”, defines and establishes a framework for measuring fair value and expands disclosures about fair value measurements. In accordance with ASC 820, the Company has categorized its financial assets and liabilities, based on the priority of the inputs to the valuation technique, into a three-level fair value hierarchy as set forth below.

Level 1 – Assets and liabilities whose values are based on unadjusted quoted prices for identical assets or liabilities in an active market that the company has the ability to access at the measurement date.

Level 2 – Assets and liabilities whose values are based on quoted prices for similar attributes in active markets; quoted prices in markets where trading occurs infrequently; and inputs other than quoted prices that are observable, either directly or indirectly, for substantially the full term of the asset or liability.

Level 3 – Assets and liabilities whose values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement.

If the inputs used to measure the financial instruments fall within different levels of the hierarchy, the categorization is based on the lowest level input that is significant to the fair value measurement of the instrument.

The following table presents the Company’s financial assets and liabilities measured at fair value on a recurring basis in the consolidated balance sheets (in millions):

	December 31, 2020
	Total Fair Value and Carrying Value on Balance Sheet		Fair Value Measurement Category
			Level 1		Level 2		Level 3
Assets:
Money market account	$	59.9	$	—	$	59.9	$	—
Certificate of deposit	$	2.8	$	—	$	2.8	$	—
Corporate bonds	$	25.2	$	—	$	25.2	$	—

	December 31, 2019
	Total Fair Value and Carrying Value on Balance Sheet		Fair Value Measurement Category
			Level 1		Level 2		Level 3
Assets:
Money market account	$	21.3	$	—	$	21.3	$	—
Certificate of deposit	$	6.1	$	—	$	6.1	$	—
Corporate bonds	$	85.6	$	—	$	85.6	$	—

As of December 31, 2020, the Company held investments in a money market fund, certificates of deposit and corporate bonds. All certificates of deposit are within the current FDIC insurance limits and all corporate bonds are investment grade.

The Company’s available for sale securities are comprised of certificates of deposit and bonds. These securities are valued using quoted prices for similar attributes in active markets (Level 2). Since these investments are classified as available for sale, they are recorded at their fair market value within Cash and cash equivalents and Marketable securities in the Consolidated Balance Sheets and their unrealized gains or losses are included in other comprehensive income.

As of December 31, 2020, the following table summarizes the amortized cost and the unrealized (gains) losses of the available for sale securities (in thousands):

	Certificates of Deposit				Corporate Bonds
	Amortized Cost		Unrealized gains (losses)		Amortized Cost		Unrealized gains (losses)
Due within a year	$	2,796	$	18	$	24,941	$	233
Due after one year through five years		-		-		-		-
Total	$	2,796	$	18	$	24,941	$	233