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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