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INCOME TAXES - Unrecognized tax benefits (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Activity of unrecognized tax benefits |  |
Balance at the beginning of the year | $ 13,577 | $ 19,677
Additions on tax positions for the current year | 3,225 | 3,084
Additions on tax positions from prior years | 2,582 | 1,479
Reduction in tax positions from prior year | (4,406) | (10,663)
Balance at the end of the year | 14,978 | 13,577
Deferred income tax assets: |  |
Tax credit carryforwards | 5,934 | 13,130
Net operating loss carryforwards | 3,678 | 6,494
Customer advances | 3,443 | 2,848
Allowance for doubtful accounts | 2,994 | 4,471
Inventory reserve | 11,026 | 11,636
Inventory capitalization | 481 | 406
Accrued liabilities | 2,956 | 3,241
Operating lease liabilities | 8,043 | 8,714
Stock and deferred compensation | 12,224 | 10,601
Other assets | 1,164 | 1,446
Total deferred income tax assets | 51,943 | 62,987
Valuation allowance | (8,433) | (12,301)
Net deferred income tax assets | 43,510 | 50,686
Deferred income tax liabilities: |  |
Depreciation | (5,860) | (7,604)
Amortization of intangible assets | (21,617) | (31,518)
Withholding tax on unrepatriated foreign earnings | (6,851) | (6,851)
Operating lease ROU assets | (7,931) | (8,480)
State transition tax | (1,754) | (1,754)
Other liabilities | (1,824) | (1,750)
Total deferred income tax liabilities | (45,837) | (57,957)
Net deferred income tax liability | $ (2,327) | $ (7,271)

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