Revenues (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($) segment	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Deferred Revenue and Contract Balances
Balance	$ 13,280	$ 13,544	$ 13,544
Increases to deferred income	7,082	2,072
Recognition of revenue	(2,112)	(2,445)
Balance	$ 18,250	13,171	13,280
Period of unsatisfied performance obligations	1 year
Accounts receivable, net	$ 14,949		$ 7,241
Total revenues	$ 133,842	63,320
Number of reportable segments | segment	5
Corporate and Other
Deferred Revenue and Contract Balances
Total revenues	$ 7,081	3,682
Base advisory fee
Deferred Revenue and Contract Balances
Total revenues	11,537	10,622
Incentive advisory fee
Deferred Revenue and Contract Balances
Total revenues	170	170
Other advisory revenue
Deferred Revenue and Contract Balances
Total revenues	129	128
Total advisory services revenue
Deferred Revenue and Contract Balances
Recognition of revenue	(554)	(770)
Total revenues	11,836	10,920
Total advisory services revenue | Corporate and Other
Deferred Revenue and Contract Balances
Total revenues	0	0
Base fee
Deferred Revenue and Contract Balances
Total revenues	6,124	0
Project management
Deferred Revenue and Contract Balances
Total revenues	3,938	6,442
Project management | Corporate and Other
Deferred Revenue and Contract Balances
Total revenues	0	0
Audio visual
Deferred Revenue and Contract Balances
Recognition of revenue	(931)	(1,000)
Total revenues	29,674	30,975
Audio visual | Corporate and Other
Deferred Revenue and Contract Balances
Total revenues	0	0
Other
Deferred Revenue and Contract Balances
Recognition of revenue	(627)	(636)
Total revenues	6,691	5,010
Debt placement fees
Deferred Revenue and Contract Balances
Total revenues	128	1,354
Claims management services
Deferred Revenue and Contract Balances
Total revenues	57	41
Lease revenue
Deferred Revenue and Contract Balances
Total revenues	0	1,030
Other services
Deferred Revenue and Contract Balances
Total revenues	6,506	2,585
Total other revenue
Deferred Revenue and Contract Balances
Total revenues	6,691	5,010
Cost reimbursement revenue
Deferred Revenue and Contract Balances
Total revenues	75,579	9,973
Cost reimbursement revenue | Corporate and Other
Deferred Revenue and Contract Balances
Total revenues	$ 969	0
Remington
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Base management fee, percentage of hotel revenues	3.00%		3.00%
Incentive management fee, percent of hotel revenues	1.00%
Deferred Revenue and Contract Balances
Total revenues		0
Remington | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	$ 70,456
Remington | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0
Remington | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0
Remington | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0
Remington | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	64,332
JSAV
Deferred Revenue and Contract Balances
Total revenues	29,674	30,975
JSAV | United States
Deferred Revenue and Contract Balances
Total revenues	21,758	23,142
JSAV | Mexico
Deferred Revenue and Contract Balances
Total revenues	6,471	5,728
JSAV | Dominican Republic
Deferred Revenue and Contract Balances
Total revenues	1,445	2,105
JSAV | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	29,674	30,975
JSAV | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
JSAV | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
JSAV | Audio visual
Deferred Revenue and Contract Balances
Total revenues	29,674	30,975
JSAV | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	29,674	30,975
JSAV | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
Premier | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	5,152	7,790
Premier | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
Premier | Project management
Deferred Revenue and Contract Balances
Total revenues	3,938	6,442
Premier | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	3,938	6,442
Premier | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
Premier | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	1,214	1,348
REIT Advisory | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	20,957	20,616
REIT Advisory | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	11,836	10,920
REIT Advisory | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
REIT Advisory | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
REIT Advisory | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	9,064	8,625
OpenKey | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	522	257
OpenKey | Total advisory services revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
OpenKey | Project management | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
OpenKey | Audio visual | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
OpenKey | Cost reimbursement revenue | Operating Segments
Deferred Revenue and Contract Balances
Total revenues	0	0
Ashford Trust
Deferred Revenue and Contract Balances
Due from related parties	1,280		$ 4,805
Total revenues	86,362	22,174
Ashford Trust | Base fee
Deferred Revenue and Contract Balances
Total revenues	5,693	0
Ashford Trust | Project management
Deferred Revenue and Contract Balances
Total revenues	3,082	4,016
Ashford Trust | Audio visual
Deferred Revenue and Contract Balances
Total revenues	0	0
Ashford Trust | Cost reimbursement revenue
Deferred Revenue and Contract Balances
Total revenues	68,073	7,610
Ashford Trust | Remington
Deferred Revenue and Contract Balances
Total revenues	65,535	0
Ashford Trust | Premier | Project management
Deferred Revenue and Contract Balances
Total revenues	3,942	4,939
Ashford Trust | REIT Advisory
Deferred Revenue and Contract Balances
Total revenues	15,608	15,689
Ashford Trust | REIT Advisory | Audio visual
Deferred Revenue and Contract Balances
Total revenues	4,597	3,823
Ashford Trust | OpenKey
Deferred Revenue and Contract Balances
Total revenues	$ 99	28
Ashford Trust | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Advisory services, monthly base fee	0.50%
Total market capitalization threshold for calculating base advisory fee	$ 6,000,000
Ashford Trust | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Advisory services, monthly base fee	0.70%
Total market capitalization threshold for calculating base advisory fee	$ 10,000,000
Braemar
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Advisory services, monthly base fee	0.70%
Deferred Revenue and Contract Balances
Investment in unconsolidated entities	$ 5,000
Due from related parties	891		$ 1,591
Total revenues	11,347	8,218
Braemar | Base fee
Deferred Revenue and Contract Balances
Total revenues	355	0
Braemar | Project management
Deferred Revenue and Contract Balances
Total revenues	743	2,371
Braemar | Audio visual
Deferred Revenue and Contract Balances
Total revenues	0	0
Braemar | Cost reimbursement revenue
Deferred Revenue and Contract Balances
Total revenues	6,870	2,314
Braemar | Remington | Project management
Deferred Revenue and Contract Balances
Total revenues	4,217	0
Braemar | Premier | Project management
Deferred Revenue and Contract Balances
Total revenues	1,093	2,747
Braemar | REIT Advisory
Deferred Revenue and Contract Balances
Total revenues	5,346	4,927
Braemar | REIT Advisory | Audio visual
Deferred Revenue and Contract Balances
Total revenues	1,005	183
Braemar | OpenKey
Deferred Revenue and Contract Balances
Total revenues	$ 60	$ 20