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Cash received from customers as progress payments on projects that have been partially completed.

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Description of warranty and related obligation in contract with customer.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

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Amount of decrease in valuation and qualifying accounts and reserves.

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Amount of increase in valuation and qualifying accounts and reserves from business combination.

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