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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 02, 2021 | Jun. 30, 2022 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2010
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from sale of common stock |  |  |  |  |  |  |  |  | $ 25,129 | $ 8,199 | $ 18,162 |
Options vesting period |  |  |  |  |  |  |  |  | 4 years |  |  |
Aggregate intrinsic value of stock options exercised |  |  |  |  |  |  |  |  | $ 7,900 | 1,700 | 8,000 |
Cash received from options exercised |  |  |  |  |  |  |  |  | $ 20,300 | $ 3,700 | $ 12,900 |
Weighted average per share fair value of options granted |  |  |  |  |  |  |  |  | $ 13.25 | $ 13.66 | $ 24.07 |
Unrecognized compensation costs |  |  |  |  |  |  |  |  | $ 62,100 | $ 63,900 | $ 66,000 |
Weighted average period cost expected to be recognized |  |  |  |  |  |  |  |  | 2 years 7 months 6 days | 2 years 8 months 12 days | 2 years 3 months 18 days |
Weighted average remaining contractual term, Outstanding |  |  |  |  |  |  |  |  | 5 years 7 months 6 days |  |  |
Terms of award |  |  |  |  |  |  |  |  | PSUs for which the number of shares issuable at the end of performance period can reach up to 200% of the shares approved in the award based on the achievement of certain pre-defined Acadia-specific performance criteria and continued employment through the vesting period |  |  |
Share price of common stock |  |  |  |  |  |  |  |  | $ 31.31 |  |  |
Issuance of common stock pursuant to employee stock purchase plan |  |  |  |  |  |  |  |  | $ 4,820 | $ 4,494 | $ 5,312 |
Maximum amount paid as cash awards to employees | $ 15,100 |  |  |  |  |  |  |  | 10,100 |  |  |
Estimated Liability |  |  |  |  |  |  |  |  | 4,500 | 900 |  |
Fair value of awards | $ 4,400 |  |  |  |  |  |  |  | 5,200 | 1,800 |  |
Compensation cost related to the awards |  |  |  |  |  |  |  |  | $ 3,600 | 300 |  |
Inducement Plan 2023 |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock available for grants |  |  |  |  |  |  |  |  | 599,864 |  |  |
Employee Stock Option | Equity Incentive Plan 2010 |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of Options as percentage of fair market value |  |  |  |  |  |  |  |  |  |  |  | 100.00%
Options maximum expiration term |  |  |  |  |  |  |  |  |  |  |  | 10 years
Options vesting period |  |  |  |  |  |  |  |  |  |  |  | 4 years
Number of common stock authorized for issuance |  |  |  |  |  |  |  |  | 30,490,486 |  |  |
Common stock available for grants |  |  |  |  |  |  |  |  | 7,731,848 |  |  |
Common stock reserved for issuance under stock purchase plan |  | 6,000,000 |  | 8,300,000 | 6,700,000 | 5,500,000 | 3,000,000 | 5,000,000 |  |  |  |
Employee Stock Option | Equity Incentive Plan 2004 |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of Options as percentage of fair market value |  |  |  |  |  |  |  |  | 100.00% |  |  |
Options vesting period |  |  |  |  |  |  |  |  | 4 years |  |  |
Number of periods additional number of shares could be added to shares authorized for issuance |  |  |  |  |  |  |  |  | 10 years |  |  |
PSU |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation costs |  |  |  |  |  |  |  |  | $ 5,700 | $ 12,700 | $ 11,500 |
Weighted average period cost expected to be recognized |  |  |  |  |  |  |  |  | 2 years 10 months 24 days |  | 2 years 3 months 18 days |
Weighted average remaining contractual term, Outstanding |  |  |  |  |  |  |  |  | 3 years 2 months 12 days | 3 years | 3 years 3 months 18 days |
Granted |  |  |  |  |  |  |  |  | 517,290 | 986,739 | 918,434 |
Vested |  |  |  |  |  |  |  |  | 459,420 | 0 | 0 |
Aggregate Intrinsic Value, Outstanding |  |  |  |  |  |  |  |  | $ 50,000 | $ 32,700 | $ 29,800 |
Outstanding shares |  |  |  |  |  |  |  |  | 1,734,828 | 2,055,574 | 1,276,936 |
Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation costs |  |  |  |  |  |  |  |  | $ 46,700 | $ 44,600 | $ 39,800 |
Weighted average period cost expected to be recognized |  |  |  |  |  |  |  |  |  | 2 years 8 months 12 days |  |
Outstanding shares |  |  |  |  |  |  |  |  | 484,757 | 1,057,741 | 639,700 |
Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock authorized for issuance |  |  |  |  |  |  |  |  | 5,525,000 |  |  |
Common stock reserved for issuance under stock purchase plan |  |  | 3,000,000 | 600,000 |  |  | 400,000 |  |  |  |  |
Common stock remained available for issuance pursuant to the Purchase Plan |  |  |  |  |  |  |  |  | 2,131,122 |  |  |
Eligible employees percentage of earnings withheld to purchase shares under purchase plan |  |  |  |  |  |  |  |  | 15.00% |  |  |
Purchase price of common stock as percentage of market value |  |  |  |  |  |  |  |  | 85.00% |  |  |
Issuance of common stock pursuant to employee stock purchase plan |  |  |  |  |  |  |  |  | 348,498 | 330,525 | 296,850 |
Average per share price of stock issued under purchase plan |  |  |  |  |  |  |  |  | $ 13.83 | $ 13.6 | $ 17.89 |
Weighted average per share fair value of purchase rights granted |  |  |  |  |  |  |  |  | $ 22.25 | $ 13.91 | $ 23.97 |
Issuance of common stock pursuant to employee stock purchase plan |  |  |  |  |  |  |  |  | $ 4,800 | $ 4,500 | $ 5,300 |
Maximum [Member] | Inducement Plan 2023 |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock authorized for issuance |  |  |  |  |  |  |  |  | 1,750,000 |  |  |

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