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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Total AOS Shareholders' Equity | Convertible Preferred Shares [Member] | Common Shares [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive Income [Member] | Retained Earnings [Member] | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ 242,039 |  |  |  |  |  |  |  |
Balance (in shares) at Jun. 30, 2016 |  |  | 0 |  |  |  |  |  |
Balance (in shares) at Jun. 30, 2016 |  |  |  | 28,405,000 |  |  |  |  |
Balance (in shares) at Jun. 30, 2016 |  |  |  |  | (5,651,000) |  |  |  |
Balance at Jun. 30, 2016 |  | $ 242,142 | $ 0 | $ 57 | $ (50,199) | $ 191,444 | $ 769 | $ 100,071 | $ (103)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Exercise of common stock options and release of RSUs (in shares) |  |  |  | 1,015,000 |  |  |  |  |
Exercise of common stock options and release of RSUs | 7,790 | 7,790 |  | $ 2 |  | 7,788 |  |  |
Reissuance of Treasury Stock (in shares) |  |  |  |  | 43,000 |  |  |  |
Reissuance of Treasury Stock | 372 | 372 |  |  | $ 363 |  |  | 9 |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  |  |  | (112,000) |  |  |  |  |
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation | (2,071) | (2,071) |  |  |  | (2,071) |  |  |
Issuance of common shares under Employee Stock Purchase Plan (in shares) |  |  |  | 292,000 |  |  |  |  |
Issuance of common shares under Employee Stock Purchase Plan | $ 2,537 | 2,537 |  | $ 0 |  | 2,537 |  |  |
Repurchase of common shares under shares repurchase program (in shares) | 0 |  |  |  |  |  |  |  |
Share-based compensation expense | $ 6,634 | 6,634 |  |  |  | 6,634 |  |  |
Net loss | 13,829 | 13,829 |  |  |  |  |  | 13,829 |
Cumulative translation adjustment |  | (463) |  |  |  |  | (463) |  |
Balance (in shares) at Jun. 30, 2017 |  |  | 0 |  |  |  |  |  |
Balance (in shares) at Jun. 30, 2017 |  |  |  | 29,600,000 |  |  |  |  |
Balance (in shares) at Jun. 30, 2017 |  |  |  |  | (5,608,000) |  |  |  |
Balance at Jun. 30, 2017 |  | 270,770 | $ 0 | $ 59 | $ (49,836) | 206,332 | 306 | 113,909 | 27,779
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net loss attributable to noncontrolling interest | (4,569) |  |  |  |  |  |  |  | (4,569)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | (549)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax | (1,012) |  |  |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | 33,000 |  |  |  |  |  |  |  | 33,000
Net income (loss) including noncontrolling interest | 9,260 |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 298,549 |  |  |  |  |  |  |  |
Exercise of common stock options and release of RSUs (in shares) |  |  |  | 645,000 |  |  |  |  |
Exercise of common stock options and release of RSUs | 1,544 | 1,544 |  | $ 1 |  | 1,543 |  |  |
Reissuance of Treasury Stock (in shares) |  |  |  |  | 18,000 |  |  |  |
Reissuance of Treasury Stock | 91 | 91 |  |  | $ 144 |  |  | (53) |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  |  |  | (145,000) |  |  |  |  |
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation | (2,363) | (2,363) |  |  |  | (2,363) |  |  |
Issuance of common shares under Employee Stock Purchase Plan (in shares) |  |  |  | 300,000 |  |  |  |  |
Issuance of common shares under Employee Stock Purchase Plan | $ 3,321 | 3,321 |  | $ 1 |  | 3,320 |  |  |
Repurchase of common shares under shares repurchase program (in shares) | (950,046) |  |  |  | (950,000) |  |  |  |
Repurchase of common shares under shares repurchase program | $ (15,098) | (15,098) |  |  | $ (15,098) |  |  |  |
Share-based compensation expense | 11,412 | 11,412 |  |  |  | 11,412 |  |  |
Net loss | 14,263 | 14,263 |  |  |  |  |  | 14,263 |
Impact on retained earnings related to ASC 606 adoption | Accounting Standards Update 2016-16 | $ 5,480 | 5,480 |  |  |  |  |  | 5,480 |
Cumulative translation adjustment |  | 134 |  |  |  |  | 134 |  |
Balance (in shares) at Jun. 30, 2018 | 0 |  | 0 |  |  |  |  |  |
Balance (in shares) at Jun. 30, 2018 | 30,400,000 |  |  | 30,400,000 |  |  |  |  |
Balance (in shares) at Jun. 30, 2018 | (6,540,000) |  |  |  | (6,540,000) |  |  |  |
Balance at Jun. 30, 2018 | $ 278,594 | 278,594 | $ 0 | $ 61 | $ (64,790) | 220,244 | 440 | 122,639 | 147,568
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net loss attributable to noncontrolling interest | (9,315) |  |  |  |  |  |  |  | (9,315)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 110
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax | 244 |  |  |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | 128,994 |  |  |  |  |  |  |  | 128,994
Net income (loss) including noncontrolling interest | 4,948 |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 426,162 |  |  |  |  |  |  |  |
Exercise of common stock options and release of RSUs (in shares) |  |  |  | 616,000 |  |  |  |  |
Exercise of common stock options and release of RSUs | 110 | 110 |  | $ 1 |  | 109 |  |  |
Reissuance of Treasury Stock (in shares) |  |  |  |  | 6,000 |  |  |  |
Reissuance of Treasury Stock | 0 | 0 |  |  | $ 51 |  |  | (51) |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  |  |  | (182,000) |  |  |  |  |
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation | (2,028) | (2,028) |  |  |  | (2,028) |  |  |
Issuance of common shares under Employee Stock Purchase Plan (in shares) |  |  |  | 329,000 |  |  |  |  |
Issuance of common shares under Employee Stock Purchase Plan | $ 2,908 | 2,908 |  | $ 0 |  | 2,908 |  |  |
Repurchase of common shares under shares repurchase program (in shares) | (111,509) |  |  |  | (112,000) |  |  |  |
Repurchase of common shares under shares repurchase program | $ (1,501) | (1,501) |  |  | $ (1,501) |  |  |  |
Share-based compensation expense | 13,177 | 13,177 |  |  |  | 13,177 |  |  |
Net loss | 1,861 | 1,861 |  |  |  |  |  | 1,861 |
Impact on retained earnings related to ASC 606 adoption | Accounting Standards Update 2016-16 | $ 1,036 | 1,036 |  |  |  |  |  | 1,036 |
Cumulative translation adjustment |  | (3,133) |  |  |  |  | (3,133) |  |
Balance (in shares) at Jun. 30, 2019 | 0 |  | 0 |  |  |  |  |  |
Balance (in shares) at Jun. 30, 2019 | 31,163,000 |  |  | 31,163,000 |  |  |  |  |
Balance (in shares) at Jun. 30, 2019 | (6,646,000) |  |  |  | (6,646,000) |  |  |  |
Balance at Jun. 30, 2019 | $ 291,024 | $ 291,024 | $ 0 | $ 62 | $ (66,240) | $ 234,410 | $ (2,693) | $ 125,485 | 152,265
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net loss attributable to noncontrolling interest | (16,499) |  |  |  |  |  |  |  | (16,499)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | (2,804)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax | (5,937) |  |  |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | 24,000 |  |  |  |  |  |  |  | $ 24,000
Net income (loss) including noncontrolling interest | (14,638) |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ 443,289 |  |  |  |  |  |  |  |

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