Earnings Per Share - Schedule of Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Feb. 25, 2015	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Numerator
Net income attributable to AAC Holdings, Inc.										$ 11,174	$ 7,548	$ 786
Net income available to AAC Holdings, Inc. common stockholders		$ 448	$ 2,452	$ 5,555	$ 2,038	$ 3,109	$ 2,213	$ 514	$ 1,019	$ 10,493	$ 6,855	$ 1,786
Denominator
Weighted-average shares outstanding – basic										21,605,037	16,557,655	13,855,797
Dilutive securities										56,222	61,525	436,140
Weighted-average shares outstanding – diluted										21,661,259	16,619,180	14,291,937
Basic earnings per share		$ 0.02	$ 0.11	$ 0.26	$ 0.10	$ 0.15	$ 0.14	$ 0.03	$ 0.07	$ 0.49	$ 0.41	$ 0.13
Diluted earnings per share		$ 0.02	$ 0.11	$ 0.26	$ 0.10	$ 0.15	$ 0.14	$ 0.03	$ 0.07	$ 0.48	$ 0.41	$ 0.12
Series B Preferred Stock
Numerator
Deemed contribution-redemption of Series B Preferred Stock												$ 1,000
Series A Preferred Stock
Numerator
Redemption of BHR Series A Preferred Units	$ (200)
BHR | Series A Preferred Stock
Numerator
BHR Series A Preferred Unit dividends										$ (147)	$ (693)
Redemption of BHR Series A Preferred Units										$ (534)