Description of Business and Basis of Presentation	12 Months Ended
Dec. 31, 2013
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	1. Description of Business and Basis of Presentation *Description of Business* Acadia Healthcare Company, Inc. (the “Company”) develops and operates inpatient psychiatric facilities, residential treatment centers, group homes, substance abuse facilities and facilities providing outpatient behavioral healthcare services to serve the behavioral health and recovery needs of communities throughout the United States. At December 31, 2013, the Company operated 51 behavioral healthcare facilities with approximately 4,200 licensed beds in 23 states and Puerto Rico. The Company was formed in October 2005 as a Delaware limited liability company. On May 13, 2011, the Company was converted to a Delaware C-corporation registered as Acadia Healthcare Company, Inc. Until November 1, 2011, the Company was a wholly-owned subsidiary of Acadia Healthcare Holdings, LLC (“Holdings”). *Basis of Presentation* The business of the Company is conducted through limited liability companies and C-corporations, each of which is a direct or indirect wholly owned subsidiary of the Company. The Company’s consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, all of which are 100% owned. All significant intercompany accounts and transactions have been eliminated in consolidation. Prior to April 1, 2011, the Company and its limited liability company subsidiaries were taxed as flow-through entities and as such, the results of operations of the Company related to the flow-through entities were included in the income tax returns of its members. On April 1, 2011, the Company and its wholly-owned limited liability company subsidiaries elected to be taxed as a corporation for federal and state income tax purposes, and, therefore, income taxes became the obligation of the Company subsequent to April 1, 2011. The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. The majority of the Company’s expenses are “cost of revenue” items. Costs that could be classified as general and administrative expenses include the Company’s corporate office costs, which were $29.0 million, $21.6 million and $13.1 million for the years ended December 31, 2013, 2012 and 2011, respectively. Certain reclassifications have been made to prior years to conform to the current year presentation.

1. Description of Business and Basis of Presentation

Description of Business

Acadia Healthcare Company, Inc. (the “Company”) develops and operates inpatient psychiatric facilities, residential treatment centers, group homes, substance abuse facilities and facilities providing outpatient behavioral healthcare services to serve the behavioral health and recovery needs of communities throughout the United States. At December 31, 2013, the Company operated 51 behavioral healthcare facilities with approximately 4,200 licensed beds in 23 states and Puerto Rico.

The Company was formed in October 2005 as a Delaware limited liability company. On May 13, 2011, the Company was converted to a Delaware C-corporation registered as Acadia Healthcare Company, Inc. Until November 1, 2011, the Company was a wholly-owned subsidiary of Acadia Healthcare Holdings, LLC (“Holdings”).

Basis of Presentation

The business of the Company is conducted through limited liability companies and C-corporations, each of which is a direct or indirect wholly owned subsidiary of the Company. The Company’s consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, all of which are 100% owned. All significant intercompany accounts and transactions have been eliminated in consolidation.

Prior to April 1, 2011, the Company and its limited liability company subsidiaries were taxed as flow-through entities and as such, the results of operations of the Company related to the flow-through entities were included in the income tax returns of its members. On April 1, 2011, the Company and its wholly-owned limited liability company subsidiaries elected to be taxed as a corporation for federal and state income tax purposes, and, therefore, income taxes became the obligation of the Company subsequent to April 1, 2011.

The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. The majority of the Company’s expenses are “cost of revenue” items. Costs that could be classified as general and administrative expenses include the Company’s corporate office costs, which were $29.0 million, $21.6 million and $13.1 million for the years ended December 31, 2013, 2012 and 2011, respectively.

Certain reclassifications have been made to prior years to conform to the current year presentation.