CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Total AOS Shareholders' Equity	Total AOS Shareholders' Equity Cumulative Effect, Period of Adoption, Adjustment	Convertible Preferred Shares [Member]	Common Shares [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity Balance, Including Portion Attributable to Noncontrolling Interest	$ 298,549
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		$ (5,480)	$ 270,770	$ (5,480)	$ 0	$ 59	$ (49,836)	$ 206,332	$ 306	$ 113,909	$ (5,480)	$ 27,779
Increase (Decrease) in Stockholders' Equity [Roll Forward]
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 income (loss) attributable to AOS	14,263		14,263							14,263
Cumulative translation adjustment			134						134
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
Balance (in shares) at Jun. 30, 2018					0
Balance (in shares) at Jun. 30, 2018						30,400,000
Balance (in shares) at Jun. 30, 2018							(6,540,000)
Balance at Jun. 30, 2018		$ 1,036	278,594	$ 1,036	$ 0	$ 61	$ (64,790)	220,244	440	122,639	$ 1,036	147,568
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity Balance, 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 income (loss) attributable to AOS	1,861		1,861							1,861
Cumulative translation adjustment			(3,133)						(3,133)
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)
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]
Stockholders' Equity Balance, Including Portion Attributable to Noncontrolling Interest	443,289
Exercise of common stock options and release of RSUs (in shares)						562,000
Exercise of common stock options and release of RSUs	25		25			$ 1		24
Reissuance of Treasury Stock (in shares)							7,000
Reissuance of Treasury Stock	0		0				$ 56			(56)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation						(181,000)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	(1,509)		(1,509)					(1,509)
Issuance of common shares under Employee Stock Purchase Plan (in shares)						400,000
Issuance of common shares under Employee Stock Purchase Plan	$ 3,325		3,325			$ 1		3,324
Repurchase of common shares under shares repurchase program (in shares)	0
Share-based compensation expense	$ 9,854		9,854					9,854
Net income (loss) attributable to AOS	(6,596)		(6,596)							(6,596)
Cumulative translation adjustment			(2,434)						(2,434)
Net loss attributable to noncontrolling interest	(11,661)											(11,661)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest												(2,405)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(4,839)
Net income (loss) including noncontrolling interest	$ (18,257)
Balance (in shares) at Jun. 30, 2020	0				0
Balance (in shares) at Jun. 30, 2020	31,944,000					31,944,000
Balance (in shares) at Jun. 30, 2020	(6,639,000)						(6,639,000)
Balance at Jun. 30, 2020	$ 293,689		$ 293,689		$ 0	$ 64	$ (66,184)	$ 246,103	$ (5,127)	$ 118,833		$ 138,199
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity Balance, Including Portion Attributable to Noncontrolling Interest	$ 431,888