Accrued Expenses and Other Liabilities - Other Non-Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Other non-current liabilities
Uncertain tax positions	$ 1,206	$ 1,343
Deferred acquisition payments	0	1,200
Asset retirement obligations	865	947
Other	270	270
Total other non-current liabilities	$ 2,341	$ 3,760

Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

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Amount recognized for uncertainty in income taxes classified as noncurrent.

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Amount of expenses incurred but not yet paid classified as other, due after one year or the normal operating cycle, if longer.

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Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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