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INCOME TAXES (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 | Sep. 30, 2013 | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2013
Income before income taxes |  |  |  |  |
United States |  |  | $ 17,569 | $ 17,033 | $ 65,851
Foreign |  |  | 44,675 | 65,894 | 71,317
Income before income taxes |  |  | 62,244 | 82,927 | 137,168
Current: |  |  |  |  |
Federal |  |  | 22,418 | (3,663) | 30,061
State |  |  | (36) | 334 | 368
Foreign |  |  | 14,835 | 30,950 | 44,749
Total current income tax expenses |  |  | 37,217 | 27,621 | 75,178
Deferred and others: |  |  |  |  |
Federal |  |  | (5,506) | (4,122) | (4,341)
State |  |  | (49) | (26) | (27)
Foreign |  |  | (22,096) | (4,018) | (7,051)
Total deferred and other income tax expenses |  |  | (27,651) | (8,166) | (11,419)
Total income tax expenses |  |  | 9,566 | 19,455 | 63,759
Differences between provision for income taxes and income tax expense computed by applying federal rates |  |  |  |  |
Total expense computed by applying federal rates |  |  | 21,786 | 29,024 | 48,009
State and provincial income taxes, net of federal benefit |  |  | 25 | 334 | 368
Excess depletion |  |  | (1,429) | (1,114) | (1,395)
Estimates for uncertain tax positions |  |  | 1,404 | (7,386) | 1,868
Statutory tax attributable to non-controlling interest |  |  | (211) | (293) | (1,236)
Effect of foreign earnings |  |  | 6,536 | 1,141 | 4,223
Effect of foreign earnings indefinitely reinvested |  |  | (7,601) | (1,700) |
Effect of recognized loss on available-for-sale securities |  |  |  | 562 | 4,239
Unrealized foreign exchange gains |  |  | (10,949) | (367) | 1,146
Changes in estimates and corrected errors of prior year tax |  |  | (359) | (594) | 4,979
Other |  |  | (1,225) | (152) | 1,558
Total income tax expenses |  |  | 9,566 | 19,455 | 63,759
Income tax (benefit) expense resulting from continued review of prior years tax accounts | $ 2,600 | $ (1,700) |  |  |
Deferred tax assets: |  |  |  |  |
Stock-based compensation | 3,511 |  | 4,393 | 3,511 |
Net operating losses | 19,322 |  | 16,087 | 19,322 |
Other deferred tax assets | 7,068 |  | 3,904 | 7,068 |
Total deferred tax assets | 29,901 |  | 24,384 | 29,901 |
Valuation allowance | (4,933) |  | (4,262) | (4,933) |
Net deferred tax assets | 24,968 |  | 20,122 | 24,968 |
Deferred tax liabilities: |  |  |  |  |
Mineral property basis | (158,301) |  | (133,646) | (158,301) |
Unrealized foreign exchange gains | (3,072) |  |  | (3,072) |
Unrealized foreign exchange losses |  |  | 936 |  |
2019 Notes | (20,002) |  | (16,384) | (20,002) |
Other deferred tax liabilities | (2,239) |  | (1,658) | (2,239) |
Total deferred tax liabilities | (183,614) |  | (150,752) | (183,614) |
Total deferred tax liabilities | (158,646) |  | (130,630) | (158,646) |
Net operating loss carry forwards |  |  |  |  |
Net operating loss carry forwards | 77,000 |  | 55,000 | 77,000 |
Reconciliation of beginning and ending amount of gross unrecognized tax benefits |  |  |  |  |
Total gross unrecognized tax benefits at beginning of year |  | $ 21,166 | 13,725 | 21,166 | 19,469
Additions / Reductions for tax positions of current year |  |  | 1,662 | (1,052) | 2,638
Reductions due to settlements with taxing authorities |  |  | (257) | (296) | (941)
Reductions due to lapse of statute of limitations |  |  |  | (6,093) |
Total amount of gross unrecognized tax benefits at end of year | 13,725 |  | $ 15,130 | 13,725 | $ 21,166
Net unrecognized tax benefits |  |  |  |  |
Expiration period of statute of limitations for income tax examinations |  |  | 12 months |  |
Accrued income-tax-related interest and penalties | $ 5,400 |  | $ 4,600 | $ 5,400 |
Canada |  |  |  |  |
Differences between provision for income taxes and income tax expense computed by applying federal rates |  |  |  |  |
Income tax rate adjustment/ reform |  |  | 4,070 |  |
Chile |  |  |  |  |
Differences between provision for income taxes and income tax expense computed by applying federal rates |  |  |  |  |
Income tax rate adjustment/ reform |  |  | $ (2,481) |  |

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