Reorganization Transactions - Additional Information (Details)						1 Months Ended			2 Months Ended	3 Months Ended										12 Months Ended
	Feb. 25, 2015 USD ($)	Nov. 10, 2014 shares	Oct. 07, 2014 USD ($) $ / shares shares	Apr. 17, 2014 shares	Apr. 15, 2014 USD ($) $ / shares shares	Apr. 30, 2014 USD ($) shares	Apr. 30, 2013 shares	Mar. 31, 2013 shares	Feb. 28, 2014 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) shares	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) $ / shares shares	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Apr. 30, 2014 USD ($) shares	Mar. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares	Oct. 31, 2013 $ / shares
Business Acquisition [Line Items]
Outstanding common membership interest					93.60%
Share exchange ratio					one-for-one
Common stock shares sold | shares						741,322	1,423,574			22,813,809				21,374,374			741,322	516,625		22,813,809	21,374,374
Redemption of stock | shares				14,318
Preferred units, value per unit | $ / shares																		$ 8.12
Acquisition-related expenses																				$ 3,401,000	$ 845,000
Revenues										$ 58,282,000	$ 57,372,000	$ 53,784,000	$ 42,823,000	$ 37,166,000	$ 36,599,000	$ 29,120,000		$ 30,083,000		212,261,000	132,968,000	$ 115,741,000
Income before income tax expense																				$ 13,121,000	$ 8,921,000	$ 2,107,000
Shares price per share | $ / shares														$ 5.24							$ 5.24
Proceeds from sale of common stock — initial public offering			$ 68,800,000																		$ 69,518,000
AAC Holdings, Inc.
Business Acquisition [Line Items]
Issuance of common stock in connection with merger		1.571119
Conversion of stock | shares		293,040
Percentage of ownership on outstanding shares		100.00%
Alcentra
Business Acquisition [Line Items]
Closing fee					1.00%
Put right option exercisable terms																				Alcentra was able to exercise its put right for a period of 30 days following the 36th month or 48th month after the date of issuance and at any time following the 60th month after the date of issuance.
Director
Business Acquisition [Line Items]
Common stock shares sold | shares										23,717										23,717
IPO
Business Acquisition [Line Items]
Common stock issued, share | shares			5,750,000
Shares price per share | $ / shares			$ 15.00
Proceeds from sale of common stock — initial public offering			$ 68,800,000
Over Allotment Option
Business Acquisition [Line Items]
Common stock issued, share | shares			250,000
Over Allotment Option | Certain Stockholders
Business Acquisition [Line Items]
Common stock issued, share | shares			500,000
Series A Preferred Stock
Business Acquisition [Line Items]
Preferred units redeemed, value	$ 8,600,000
Preferred stock redemption call premium percentage	3.00%
Preferred Stock Redemption Premium	$ 200,000
Series A Preferred Stock | Alcentra
Business Acquisition [Line Items]
Preferred units, value per unit | $ / shares					$ 50,000
Preferred return on initial investment					12.00%
Preferred units held | shares					60
Series A Preferred Stock | Non-payment for 3 months | Alcentra
Business Acquisition [Line Items]
Preferred return on initial investment					15.00%
Series A Preferred Stock | Non-payment for 4 months | Alcentra
Business Acquisition [Line Items]
Preferred return on initial investment					18.00%
Series A Preferred Stock | Director
Business Acquisition [Line Items]
Proceeds from sale of equity									$ 300,000
Preferred stock shares sold | shares									5
Redemption of stock | shares					9
Common stock purchased, shares | shares					55,406
Preferred units, value per unit | $ / shares									$ 50,000
Common Stock
Business Acquisition [Line Items]
Proceeds from sale of equity																	$ 6,000,000
Common stock issued, share | shares							85,315	1,338,809														1,424,124
Shares price per share | $ / shares																			$ 5.24			$ 5.24
Common Stock | Director
Business Acquisition [Line Items]
Common stock issued, share | shares																						715,883
Common Stock | IPO | AAC Holdings, Inc.
Business Acquisition [Line Items]
Common stock issued, share | shares																					5,250,000
BHR
Business Acquisition [Line Items]
Outstanding common membership interest					100.00%
Business acquisition cash paid					$ 3,000,000
Term loan for business acquisition					$ 1,800,000
Common stock issued in connection with business combination, shares restricted | shares					820,124
Percentage of sale required to approve sale by BHR					50.00%
Percentage of minority interest					50.00%
Fair value of common stock, per share | $ / shares					$ 8.54
Repayment of term loan					$ 1,700,000
Monthly principal payments					$ 35,855
Interest rate					5.00%
Term loan balloon payment					$ 1,400,000
Total consideration related to acquisition					4,900,000
Fair value of consideration transferred					11,800,000
Loan assumed					1,700,000
Deferred tax liabilities net					200,000
Noncontrolling interest attributable to BHR					3,700,000
Adjustments to additional paid in capital					1,200,000
BHR | IPO Prior to April 2015
Business Acquisition [Line Items]
Amount of loan due immediately if trigger event occurs					1,700,000
BHR | Series A Preferred Stock
Business Acquisition [Line Items]
Proceeds from sale of equity					$ 7,800,000	$ 7,800,000			$ 400,000										$ 1,400,000
Preferred stock shares sold | shares					160	160			8.5								160		28			28
Redemption of stock | shares						36.5
Preferred units redeemed, units | shares					36.5
Preferred units redeemed, value					$ 1,800,000
Common stock purchased, shares | shares					224,697
Common stock purchased, per share | $ / shares					$ 8.12
Preferred units, value per unit | $ / shares					$ 50,000				$ 50,000										$ 50,000			$ 50,000
Preferred return on initial investment																			12.00%
Maximum percentage of outstanding units for redemption					100.00%
Preferred Stock Redemption Premium																				$ 534,000
Preferred stock, redemption price per share | $ / shares					$ 50,000																		$ 50,000
Preferred units, description																				any accrued and unpaid preferred return and (ii) a call premium of (a) 3.0% through April 15, 2015, (b) 2.0% from April 16, 2015 through April 15, 2017 and (c) no premium any time after April 15, 2017.
Put right option exercisable terms																				The holder was able to exercise the put right on the 36th month, 48th month and 60th month following the date of issuance for a 30-day period.
Percentage of voting or approval rights																				no voting or approval rights
BHR | Series A Preferred Stock | AAC Holdings, Inc.
Business Acquisition [Line Items]
Preferred Stock Redemption Premium																				$ 534,000
BHR | Series A Preferred Stock | Call premium through April 15, 2015
Business Acquisition [Line Items]
Preferred stock redemption call premium percentage					3.00%
BHR | Series A Preferred Stock | Call premium from April 16, 2015 through April 15, 2017
Business Acquisition [Line Items]
Preferred stock redemption call premium percentage					2.00%
BHR | Series A Preferred Stock | Call premium any time after April 15, 2017
Business Acquisition [Line Items]
Preferred Stock Redemption Premium					$ 0
BHR | Series A Preferred Stock | Director
Business Acquisition [Line Items]
Preferred units redeemed, units | shares					9
Preferred units redeemed, value					$ 450,000
Common stock purchased, shares | shares					55,406
Preferred units, value per unit | $ / shares																			$ 200,000			$ 200,000
BHR | Common Stock | AAC Holdings, Inc.
Business Acquisition [Line Items]
Common stock issued in connection with business combination, shares restricted | shares																					820,124
CRMS
Business Acquisition [Line Items]
Outstanding common membership interest					100.00%
Business acquisition cash paid					$ 500,000
Common stock issued in connection with business combination, shares restricted | shares					234,324
Fair value of common stock, per share | $ / shares					$ 8.54
Consideration paid for acquisition					$ 2,500,000
Acquisition-related expenses																					$ 100,000
Revenues																					4,000,000
Income before income tax expense																					$ 1,800,000
CRMS | Common Stock | AAC Holdings, Inc.
Business Acquisition [Line Items]
Common stock issued in connection with business combination, shares restricted | shares																					234,324
Minimum
Business Acquisition [Line Items]
Outstanding common membership interest					93.60%
Minimum | Private Share Exchange
Business Acquisition [Line Items]
Shareholding percentage																		90.00%
Minimum | BHR | Series A Preferred Stock
Business Acquisition [Line Items]
Preferred units redeemed, units | shares					40
Maximum
Business Acquisition [Line Items]
Payments to affiliates																				$ 3,000,000