The accounting guidance on fair value measurements defines fair value, establishes a framework for measuring fair value under GAAP, and expands disclosures about fair value measurements. The guidance is applicable for all financial assets and financial liabilities and for all nonfinancial assets and nonfinancial liabilities recognized or disclosed at fair value in the financial statements on a recurring basis (at least annually). Fair value is defined as the exchange price that would be received from selling an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and also considers assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions and risk of nonperformance.

Accounting guidance on fair value measurements requires that assets and liabilities carried at fair value be classified and disclosed in one of the following three categories:

Level 1 — Quoted (unadjusted) prices in active markets for identical assets or liabilities.

The Company did not have any Level 1 assets as of June 30, 2019 and September 30, 2018.

Level 2 — Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

The Company’s Level 2 assets as of June 30, 2019 and September 30, 2018 consisted of money market funds, commercial paper instruments and corporate bonds.

Level 3 — Unobservable inputs to the valuation methodology that are supported by little or no market activity and that are significant to the measurement of the fair value of the assets or liabilities. Level 3 assets and liabilities include those whose fair value measurements are determined using pricing models, discounted cash flow methodologies or similar valuation techniques, as well as significant management judgment or estimation.

The Level 3 liability as of June 30, 2019 consisted of contingent consideration obligations related to the fiscal 2016 acquisition of NorMedix, Inc. (“NorMedix”). Level 3 liabilities as of September 30, 2018 consisted of contingent consideration obligations related to the fiscal 2016 acquisitions of Creagh Medical Ltd. (“Creagh Medical”) and NorMedix. Consideration owed to the sellers of Creagh Medical from revenue and value-creating milestones achieved through September 30, 2018 was paid during the nine months ended June 30, 2019. Consideration owed to the sellers of NorMedix upon achievement of revenue and value-creating milestones through September 30, 2019, if any, is due to be paid in first quarter of fiscal 2020. Contingent consideration included in current liabilities of $3.1 million and $11.0 million as of June 30, 2019 and September 30, 2018, respectively, represents the Company’s estimated fair value of amounts expected to be paid within one year of each respective balance sheet date. During the first quarter of fiscal 2019, the Company paid contingent consideration obligations related to the Creagh Medical acquisition totaling $11.0 million, including $9.1 million classified as cash flows used in financing activities on the condensed consolidated statement of cash flows. The financing portion of the contingent consideration payment is equal to the acquisition-date value of the contingent consideration obligation, in accordance with ASC 230 Statements of Cash Flows.

In valuing Level 3 assets and liabilities, the Company is required to maximize the use of quoted market prices and minimize the use of unobservable inputs.

In instances where the inputs used to measure fair value fall into different levels of the fair value hierarchy, the fair value measurement has been determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular item to the fair value measurement in its entirety requires judgment, including the consideration of inputs specific to the asset or liability.

The following table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis as of June 30, 2019:

(Dollars in thousands)	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value as of June 30, 2019
Assets
Cash equivalents	$	—	$	24,175	$	—		$	24,175
Available-for-sale securities		—		16,070		—			16,070
Total assets	$	—	$	40,245	$	—		$	40,245

Liabilities
Contingent consideration	$	—	$	—	$	(3,113	)	$	(3,113	)
Total liabilities	$	—	$	—	$	(3,113	)	$	(3,113	)

The following table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2018:

(Dollars in thousands)	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value as of September 30, 2018
Assets
Cash equivalents	$	—	$	13,999	$	—		$	13,999
Available-for-sale securities		—		41,352		—		$	41,352
Total assets	$	—	$	55,351	$	—		$	55,351

Liabilities
Contingent consideration	$	—	$	—	$	(14,466	)	$	(14,466	)
Total liabilities	$	—	$	—	$	(14,466	)	$	(14,466	)

The following table summarizes the changes in the contingent consideration liabilities measured at fair value using Level 3 inputs for the three and nine months ended June 30, 2019 and 2018:

	Three Months Ended					Nine Months Ended
	June 30,					June 30,
(Dollars in thousands)	2019		2018			2019			2018
Beginning balance	$	3,009	$	13,345		$	14,466		$	14,864
Additions		—		—			—			—
Fair value adjustments		57		21			(454	)		(1,278	)
Settlements		—		—			(10,979	)		(925	)
Interest accretion		47		85			206			272
Foreign currency translation loss (gain)		—		(592	)		(126	)		(74	)
Ending balance	$	3,113	$	12,859		$	3,113		$	12,859

There were no transfers of assets or liabilities between amounts measured using Level 1, Level 2, or Level 3 fair value measurements during fiscal 2019 to-date, or fiscal 2018.

The valuation techniques used to measure the fair value of assets are as follows:

Cash equivalents — These assets are classified as Level 2 and are carried at historical cost which is a reasonable estimate of fair value because of the relatively short time between origination of the instrument and its expected realization.

Available-for-sale securities — Fair market values for these assets are based on quoted vendor prices and broker pricing in active markets underlying the securities where all significant inputs are observable. To ensure the accuracy of quoted vendor prices and broker pricing, the Company performs regular reviews of investment returns to industry benchmarks and sample tests of individual securities to validate quoted vendor prices with other available market data.

Contingent consideration obligations — The values of the contingent consideration liabilities were determined based on discounted cash flow analyses that included revenue estimates, probability of strategic milestone achievement and a discount rate, which are considered significant unobservable inputs. For the NorMedix revenue-based milestones, the Company discounted forecasted revenue by 20.5%, which represents the Company’s weighted average cost of capital for this transaction, adjusted for the short-term nature of the cash flows. The present value of forecasted revenue was used as an input into an option pricing approach, which also considered the Company’s risk of non-payment of the NorMedix revenue-based milestones. Non-revenue milestones for the NorMedix acquisition that have not already been achieved were projected to have a 0%-100% probability of achievement and expected payments were discounted using the Company’s estimated cost of debt of 6.0%. To the extent that actual results differ from these estimates, the fair value of the contingent consideration liabilities could change significantly during the contingency periods. Accretion expense is recorded as an increase to the contingent consideration liabilities due to the passage of time. Fair value adjustments represent changes in the value of the obligations related to adjustments to forecasted revenue and probability of strategic milestone completion. The contingent consideration liability related to the Creagh Medical acquisition was denominated in Euros. Foreign currency translation gains and losses are recorded as this obligation is marked to exchange rates at period-end and on the date of settlement.