Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of sales and costs of sales during the reporting period. The most significant of these estimates and assumptions for our company relate to contract revenue, fair values of assets acquired and liabilities assumed in business combinations, values for inventories reported at lower of cost or net realizable value, stock-based compensation expense, income taxes, accrued warranty costs, legal contingencies and recoveries, and the recoverability, useful lives and valuation of recorded amounts of long-lived assets, identifiable intangible assets and goodwill. Changes in estimates are reflected in the periods during which they become known. Due to the inherent uncertainty involved in making estimates, our actual amounts reported in future periods could differ materially from these estimates.

Cash and Cash Equivalents

Cash and Cash Equivalents

We consider all highly liquid investments with maturities of three months or less as of the acquisition date to be cash equivalents.

Our cash and cash equivalents totaled $54.7 million at September 30, 2021. Of this amount, approximately 83% was held by our foreign subsidiaries and subject to repatriation tax considerations. These foreign funds were held primarily by our subsidiaries in the United Kingdom, India, Malaysia, Singapore and Canada, and to a lesser extent in Australia, Albania and Germany among other countries. We have cash holdings in financial institutions that exceed insured limits for such financial institutions; however, we mitigate this risk by utilizing international financial institutions of high credit quality.

Derivative Instruments and Hedging Activity

Derivative Instruments and Hedging Activity

Our use of derivatives consists of foreign currency forward contracts. These forward contracts are utilized to partially mitigate certain balance sheet exposures or used as a net investment hedge to protect against potential changes resulting from short-term foreign currency fluctuations. These contracts have original maturities of up to three months. We do not use hedging instruments for speculative purposes.

The net investment hedge has been designated as a hedge instrument and accounted for under Accounting Standards Codification ("ASC”) 815 Derivatives and Hedging. Hedge effectiveness is assessed using the spot method, consistent with guidance in ASC 815 whereby the change in fair value of the forward contract is recorded in the same manner as the related currency translation adjustments, within other comprehensive income, as the hedging instrument is expected to be fully effective unless the amount hedged exceeds the net investment in the foreign operation, or the foreign operation is liquidated. There were no net investment hedges outstanding as of September 30, 2021.

The net gains or losses from the foreign currency forward contracts, which are not designated as hedge instruments, are reported in the consolidated income statement. We initiated these forward contracts in the first quarter of fiscal 2021. The amounts reported in the consolidated income statement for the three months ended September 30, 2021 were not significant. The fair value of our forward foreign exchange contracts is estimated using a standard valuation model and market-based observable inputs over the contractual term. Unrealized gains are recognized as assets and unrealized losses are recognized as liabilities. As of June 30, 2021 and September 30, 2021, we held foreign currency forward contracts with notional amounts totaling $26.1 million and $22.4 million, respectively. Unrealized gains and losses from the forward currency forward contracts as of September 30, 2021 were not significant.

Business Combinations

Under ASC 805, Business Combinations, the acquisition method of accounting requires us to record assets acquired less liabilities assumed in an acquisition at their estimated fair values at the date of acquisition. Any excess of the total estimated purchase consideration over the estimated fair value of the assets acquired less liabilities assumed should be recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired customers, acquired technology, trade names, useful lives and discount rates. Management’s estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. We may record adjustments to the assets acquired and liabilities assumed, with corresponding adjustments to goodwill, during the one-year post-acquisition measurement period as additional information becomes available. Upon the conclusion of the measurement period, any subsequent adjustments are reflected in reported earnings.