Segment Reporting (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) segment	Sep. 30, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			5
REVENUE
Total revenues	$ 55,868,000	$ 56,889,000	$ 235,308,000	$ 183,675,000
EXPENSES
Depreciation and amortization	10,094,000	8,048,000	30,172,000	16,671,000
Impairment	0	0	178,213,000	0
Other operating expenses	32,336,000	44,439,000	103,509,000	138,135,000
Reimbursed expenses	28,072,000	11,203,000	127,638,000	32,185,000
Total expenses	70,502,000	63,690,000	439,532,000	186,991,000
OPERATING INCOME (LOSS)	(14,634,000)	(6,801,000)	(204,224,000)	(3,316,000)
Equity in earnings (loss) of unconsolidated entities	48,000	464,000	301,000	(109,000)
Interest expense	(1,259,000)	(456,000)	(3,681,000)	(1,198,000)
Amortization of loan costs	(86,000)	(75,000)	(242,000)	(214,000)
Interest income	0	0	29,000	29,000
Realized gain (loss) on investments	0	0	(386,000)	0
Other income (expense)	(44,000)	(20,000)	(499,000)	(115,000)
INCOME (LOSS) BEFORE INCOME TAXES	(15,975,000)	(6,888,000)	(208,702,000)	(4,923,000)
Income tax (expense) benefit	1,835,000	297,000	7,404,000	(1,429,000)
NET INCOME (LOSS)	(14,140,000)	(6,591,000)	(201,298,000)	(6,352,000)
JSAV
REVENUE
Total revenues	3,114,000	22,430,000	33,758,000	83,532,000
Operating Segments | REIT Advisory
REVENUE
Total revenues	16,790,000	21,381,000	53,297,000	64,638,000
EXPENSES
Depreciation and amortization	2,128,000	2,396,000	7,004,000	4,311,000
Impairment			0
Other operating expenses	0	0	0	0
Reimbursed expenses	5,841,000	9,332,000	18,811,000	27,697,000
Total expenses	7,969,000	11,728,000	25,815,000	32,008,000
OPERATING INCOME (LOSS)	8,821,000	9,653,000	27,482,000	32,630,000
Equity in earnings (loss) of unconsolidated entities	0	0	0	0
Interest expense	0	0	0	0
Amortization of loan costs	0	0	0	0
Interest income			0	0
Realized gain (loss) on investments			0
Other income (expense)	0	0	0	0
INCOME (LOSS) BEFORE INCOME TAXES	8,821,000	9,653,000	27,482,000	32,630,000
Income tax (expense) benefit	(2,093,000)	(2,093,000)	(6,516,000)	(7,132,000)
NET INCOME (LOSS)	6,728,000	7,560,000	20,966,000	25,498,000
Operating Segments | Remington
REVENUE
Total revenues	24,800,000	0	117,715,000	0
EXPENSES
Depreciation and amortization	3,514,000		10,425,000
Impairment			126,548,000
Other operating expenses	3,101,000		10,753,000
Reimbursed expenses	21,023,000		104,123,000
Total expenses	27,638,000		251,849,000
OPERATING INCOME (LOSS)	(2,838,000)		(134,134,000)
Equity in earnings (loss) of unconsolidated entities	0		0
Interest expense	0		0
Amortization of loan costs	0		0
Interest income			0
Realized gain (loss) on investments			(386,000)
Other income (expense)	0		26,000
INCOME (LOSS) BEFORE INCOME TAXES	(2,838,000)		(134,494,000)
Income tax (expense) benefit	(502,000)		1,212,000
Operating Segments | Premier
REVENUE
Total revenues	2,277,000	7,881,000	10,173,000	23,371,000
EXPENSES
Depreciation and amortization	3,157,000	4,937,000	9,471,000	10,413,000
Impairment			49,524,000
Other operating expenses	1,662,000	2,946,000	6,549,000	8,697,000
Reimbursed expenses	487,000	1,221,000	2,393,000	3,838,000
Total expenses	5,306,000	9,104,000	67,937,000	22,948,000
OPERATING INCOME (LOSS)	(3,029,000)	(1,223,000)	(57,764,000)	423,000
Equity in earnings (loss) of unconsolidated entities	0	0	0	0
Interest expense	0	0	0	0
Amortization of loan costs	0	0	0	0
Interest income			0	0
Realized gain (loss) on investments			0
Other income (expense)	0	0	0	0
INCOME (LOSS) BEFORE INCOME TAXES	(3,029,000)	(1,223,000)	(57,764,000)	423,000
Income tax (expense) benefit	624,000	9,000	1,351,000	(759,000)
NET INCOME (LOSS)	(2,405,000)	(1,214,000)	(56,413,000)	(336,000)
Operating Segments | JSAV
REVENUE
Total revenues	3,114,000	22,430,000	33,758,000	83,532,000
EXPENSES
Depreciation and amortization	494,000	513,000	1,486,000	1,471,000
Impairment			2,141,000
Other operating expenses	6,033,000	24,965,000	37,478,000	83,269,000
Reimbursed expenses	0	0	0	0
Total expenses	6,527,000	25,478,000	41,105,000	84,740,000
OPERATING INCOME (LOSS)	(3,413,000)	(3,048,000)	(7,347,000)	(1,208,000)
Equity in earnings (loss) of unconsolidated entities	0	0	0	0
Interest expense	(187,000)	(298,000)	(628,000)	(868,000)
Amortization of loan costs	(14,000)	(14,000)	(43,000)	(41,000)
Interest income			0	0
Realized gain (loss) on investments			0
Other income (expense)	(8,000)	49,000	(321,000)	(107,000)
INCOME (LOSS) BEFORE INCOME TAXES	(3,622,000)	(3,311,000)	(8,339,000)	(2,224,000)
Income tax (expense) benefit	816,000	698,000	1,853,000	130,000
NET INCOME (LOSS)	(2,806,000)	(2,613,000)	(6,486,000)	(2,094,000)
Operating Segments | OpenKey
REVENUE
Total revenues	341,000	313,000	1,155,000	764,000
EXPENSES
Depreciation and amortization	5,000	7,000	15,000	21,000
Impairment			0
Other operating expenses	1,035,000	896,000	2,757,000	2,614,000
Reimbursed expenses	0	0	0	0
Total expenses	1,040,000	903,000	2,772,000	2,635,000
OPERATING INCOME (LOSS)	(699,000)	(590,000)	(1,617,000)	(1,871,000)
Equity in earnings (loss) of unconsolidated entities	0	0	0	0
Interest expense	0	0	0	0
Amortization of loan costs	0	(6,000)	0	(19,000)
Interest income			0	0
Realized gain (loss) on investments			0
Other income (expense)	0	3,000	(6,000)	15,000
INCOME (LOSS) BEFORE INCOME TAXES	(699,000)	(593,000)	(1,623,000)	(1,875,000)
Income tax (expense) benefit	0	0	0	0
NET INCOME (LOSS)	(699,000)	(593,000)	(1,623,000)	(1,875,000)
Corporate and Other
REVENUE
Total revenues	8,546,000	4,884,000	19,210,000	11,370,000
EXPENSES
Depreciation and amortization	796,000	195,000	1,771,000	455,000
Impairment			0
Other operating expenses	20,505,000	15,632,000	45,972,000	43,555,000
Reimbursed expenses	721,000	650,000	2,311,000	650,000
Total expenses	22,022,000	16,477,000	50,054,000	44,660,000
OPERATING INCOME (LOSS)	(13,476,000)	(11,593,000)	(30,844,000)	(33,290,000)
Equity in earnings (loss) of unconsolidated entities	48,000	464,000	301,000
Interest expense	(1,072,000)	(158,000)	(3,053,000)	(330,000)
Amortization of loan costs	(72,000)	(55,000)	(199,000)	(154,000)
Interest income			29,000	29,000
Realized gain (loss) on investments			0
Other income (expense)	(36,000)	(72,000)	(198,000)	(23,000)
INCOME (LOSS) BEFORE INCOME TAXES	(14,608,000)	(11,414,000)	(33,964,000)	(33,877,000)
Income tax (expense) benefit	2,990,000	1,683,000	9,504,000	6,332,000
NET INCOME (LOSS)	(11,618,000)	(9,731,000)	(24,460,000)	(27,545,000)
Advisory services
REVENUE
Total revenues	10,832,000	10,871,000	34,098,000	33,280,000
Advisory services | Operating Segments | REIT Advisory
REVENUE
Total revenues	10,832,000	10,871,000	34,098,000	33,280,000
Advisory services | Operating Segments | Remington
REVENUE
Total revenues	0		0
Advisory services | Operating Segments | Premier
REVENUE
Total revenues	0	0	0	0
Advisory services | Operating Segments | JSAV
REVENUE
Total revenues	0	0	0	0
Advisory services | Operating Segments | OpenKey
REVENUE
Total revenues	0	0	0	0
Advisory services | Corporate and Other
REVENUE
Total revenues	0	0	0	0
Hotel management fees
REVENUE
Total revenues	3,777,000	0	13,592,000	0
Hotel management fees | Operating Segments | REIT Advisory
REVENUE
Total revenues	0		0
Hotel management fees | Operating Segments | Remington
REVENUE
Total revenues	3,777,000		13,592,000
Hotel management fees | Operating Segments | Premier
REVENUE
Total revenues	0		0
Hotel management fees | Operating Segments | JSAV
REVENUE
Total revenues	0		0
Hotel management fees | Operating Segments | OpenKey
REVENUE
Total revenues	0		0
Hotel management fees | Corporate and Other
REVENUE
Total revenues	0		0
Project management fees
REVENUE
Total revenues	1,790,000	6,660,000	7,780,000	19,533,000
Project management fees | Operating Segments | REIT Advisory
REVENUE
Total revenues	0	0	0	0
Project management fees | Operating Segments | Remington
REVENUE
Total revenues	0		0
Project management fees | Operating Segments | Premier
REVENUE
Total revenues	1,790,000	6,660,000	7,780,000	19,533,000
Project management fees | Operating Segments | JSAV
REVENUE
Total revenues	0	0	0	0
Project management fees | Operating Segments | OpenKey
REVENUE
Total revenues	0	0	0	0
Project management fees | Corporate and Other
REVENUE
Total revenues	0	0	0	0
Audio visual
REVENUE
Total revenues	3,114,000	22,430,000	33,758,000	83,532,000
Audio visual | Operating Segments | REIT Advisory
REVENUE
Total revenues	0	0	0	0
Audio visual | Operating Segments | Remington
REVENUE
Total revenues	0		0
Audio visual | Operating Segments | Premier
REVENUE
Total revenues	0	0	0	0
Audio visual | Operating Segments | JSAV
REVENUE
Total revenues	3,114,000	22,430,000	33,758,000	83,532,000
Audio visual | Operating Segments | OpenKey
REVENUE
Total revenues	0	0	0	0
Audio visual | Corporate and Other
REVENUE
Total revenues	0	0	0	0
Other
REVENUE
Total revenues	8,222,000	5,627,000	18,250,000	14,719,000
Other | Operating Segments | REIT Advisory
REVENUE
Total revenues	55,000	1,080,000	195,000	3,235,000
Other | Operating Segments | Remington
REVENUE
Total revenues	0		0
Other | Operating Segments | Premier
REVENUE
Total revenues	0	0	0	0
Other | Operating Segments | JSAV
REVENUE
Total revenues	0	0	0	0
Other | Operating Segments | OpenKey
REVENUE
Total revenues	341,000	313,000	1,155,000	764,000
Other | Corporate and Other
REVENUE
Total revenues	7,826,000	4,234,000	16,900,000	10,720,000
Cost reimbursement revenue
REVENUE
Total revenues	28,133,000	11,301,000	127,830,000	32,611,000
Cost reimbursement revenue | Operating Segments | REIT Advisory
REVENUE
Total revenues	5,903,000	9,430,000	19,004,000	28,123,000
Cost reimbursement revenue | Operating Segments | Remington
REVENUE
Total revenues	21,023,000		104,123,000
Cost reimbursement revenue | Operating Segments | Premier
REVENUE
Total revenues	487,000	1,221,000	2,393,000	3,838,000
Cost reimbursement revenue | Operating Segments | JSAV
REVENUE
Total revenues	0	0	0	0
Cost reimbursement revenue | Operating Segments | OpenKey
REVENUE
Total revenues	0	0	0	0
Cost reimbursement revenue | Corporate and Other
REVENUE
Total revenues	720,000	$ 650,000	2,310,000	$ 650,000
Cost reimbursement revenue | Consolidation, Eliminations
REVENUE
Total revenues	$ 1,800,000		$ 7,600,000