Revenues (Details) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Nov. 06, 2019	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Deferred Revenue and Contract Balances
Beginning balance		$ 18,250	$ 13,171	$ 13,280	$ 13,544	$ 13,544
Increases to deferred income		4,578	703	11,656	2,749
Recognition of revenue		(2,591)	(2,648)	(4,699)	(5,067)
Ending balance		$ 20,237	11,226	$ 20,237	11,226	13,280
Period of unsatisfied performance obligations		1 year		1 year
Accounts receivable, net		$ 4,331		$ 4,331		$ 7,241
Total revenues		45,598	63,466	$ 179,440	126,786
Number of reportable segments | segment				5
Base advisory fee
Deferred Revenue and Contract Balances
Total revenues		11,130	11,190	$ 22,667	21,812
Incentive advisory fee
Deferred Revenue and Contract Balances
Total revenues		169	169	339	339
Other advisory revenue
Deferred Revenue and Contract Balances
Total revenues		131	130	260	258
Total advisory services revenue
Deferred Revenue and Contract Balances
Recognition of revenue		(554)	(656)	(1,100)	(1,400)
Total revenues		11,430	11,489	23,266	22,409
Base fee
Deferred Revenue and Contract Balances
Total revenues		3,691	0	9,815	0
Project management
Deferred Revenue and Contract Balances
Total revenues		2,052	6,430	5,990	12,872
Audio visual
Deferred Revenue and Contract Balances
Recognition of revenue		(219)	(1,400)	(1,100)	(2,400)
Total revenues		970	30,127	30,644	61,102
Other services
Deferred Revenue and Contract Balances
Recognition of revenue		(483)	(592)	(1,300)	(1,200)
Other
Deferred Revenue and Contract Balances
Recognition of revenue		(1,300)		(1,100)
Total revenues		3,337	4,083	10,028	9,093
Debt placement and related fees
Deferred Revenue and Contract Balances
Total revenues		1,335	79	1,463	1,433
Claims management services
Deferred Revenue and Contract Balances
Total revenues		72	55	129	96
Lease revenue
Deferred Revenue and Contract Balances
Total revenues		0	1,029	0	2,059
Other services
Deferred Revenue and Contract Balances
Total revenues		1,930	2,920	8,436	5,505
Total other revenue
Deferred Revenue and Contract Balances
Total revenues		3,337	4,083	10,028	9,093
Cost reimbursement revenue
Deferred Revenue and Contract Balances
Total revenues		24,118	11,337	99,697	21,310
REIT Advisory | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		15,550	22,641	36,507	43,257
REIT Advisory | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		11,430	11,489	23,266	22,409
REIT Advisory | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
REIT Advisory | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
REIT Advisory | Other | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		83	1,085	140	2,156
REIT Advisory | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		4,037	10,067	$ 13,101	18,692
Remington
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Base management fee, percentage of hotel revenues	3.00%			3.00%		3.00%
Incentive management fee, percent of hotel revenues				1.00%
Remington | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		22,459	0	$ 92,915	0
Remington | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0		0
Remington | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0		0
Remington | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0		0
Remington | Other | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0		0
Remington | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		18,768		83,100
Premier | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		2,744	7,700	7,896	15,490
Premier | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
Premier | Project management
Deferred Revenue and Contract Balances
Total revenues		2,052	6,430	5,990	12,872
Premier | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		2,052	6,430	5,990	12,872
Premier | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
Premier | Other | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
Premier | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		692	1,270	1,906	2,618
JSAV
Deferred Revenue and Contract Balances
Total revenues		970	30,127	30,644	61,102
JSAV | United States
Deferred Revenue and Contract Balances
Total revenues		887	24,548	22,645	47,690
JSAV | Mexico
Deferred Revenue and Contract Balances
Total revenues		38	3,757	6,509	9,485
JSAV | Dominican Republic
Deferred Revenue and Contract Balances
Total revenues		45	1,822	1,490	3,927
JSAV | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		970	30,127	30,644	61,102
JSAV | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
JSAV | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
JSAV | Audio visual
Deferred Revenue and Contract Balances
Total revenues		970	30,127	30,644	61,102
JSAV | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		970	30,127	30,644	61,102
JSAV | Other | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
JSAV | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
OpenKey | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		292	194	814	451
OpenKey | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
OpenKey | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
OpenKey | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
OpenKey | Other | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		292	194	814	451
OpenKey | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
Ashford Trust
Deferred Revenue and Contract Balances
Due from related parties		0		0		$ 4,805
Total revenues		33,898	22,487	120,260	44,661
Ashford Trust | Base fee
Deferred Revenue and Contract Balances
Total revenues		3,504	0	9,197	0
Ashford Trust | Project management
Deferred Revenue and Contract Balances
Total revenues		838	4,273	3,920	8,289
Ashford Trust | Audio visual
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
Ashford Trust | Cost reimbursement revenue
Deferred Revenue and Contract Balances
Total revenues		19,947	8,346	88,020	15,956
Ashford Trust | REIT Advisory
Deferred Revenue and Contract Balances
Total revenues		10,354	16,923	25,962	32,612
Ashford Trust | REIT Advisory | Audio visual
Deferred Revenue and Contract Balances
Total revenues		7	4,227	4,604	8,050
Ashford Trust | Remington
Deferred Revenue and Contract Balances
Total revenues		20,739	0	86,274	0
Ashford Trust | Premier | Project management
Deferred Revenue and Contract Balances
Total revenues		1,319	5,076	5,261	10,015
Ashford Trust | OpenKey
Deferred Revenue and Contract Balances
Total revenues		$ 30	27	$ 129	55
Ashford Trust | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Advisory services, monthly base fee		0.50%		0.50%
Total market capitalization threshold for calculating base advisory fee		$ 6,000,000		$ 6,000,000
Ashford Trust | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Advisory services, monthly base fee		0.70%		0.70%
Total market capitalization threshold for calculating base advisory fee		$ 10,000,000		$ 10,000,000
Braemar
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Advisory services, monthly base fee		0.70%		0.70%
Deferred Revenue and Contract Balances
Investment in unconsolidated entities				$ 5,000
Due from related parties		$ 846		846		$ 1,591
Total revenues		7,973	8,490	19,320	16,708
Braemar | Base fee
Deferred Revenue and Contract Balances
Total revenues		154	0	509	0
Braemar | Project management
Deferred Revenue and Contract Balances
Total revenues		712	2,078	1,455	4,449
Braemar | Audio visual
Deferred Revenue and Contract Balances
Total revenues		0	0	0	0
Braemar | Cost reimbursement revenue
Deferred Revenue and Contract Balances
Total revenues		3,490	2,940	10,360	5,254
Braemar | REIT Advisory
Deferred Revenue and Contract Balances
Total revenues		5,184	5,718	10,530	10,645
Braemar | REIT Advisory | Audio visual
Deferred Revenue and Contract Balances
Total revenues		0	266	1,005	449
Braemar | Remington | Project management
Deferred Revenue and Contract Balances
Total revenues		1,032	0	5,249	0
Braemar | Premier | Project management
Deferred Revenue and Contract Balances
Total revenues		897	2,493	1,990	5,240
Braemar | OpenKey
Deferred Revenue and Contract Balances
Total revenues		$ 11	$ 13	$ 71	$ 33