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Long-Term Debt (Narrative) (Details) € in Millions, £ in Millions, zł in Millions, $ in Millions			1 Months Ended		12 Months Ended
		Aug. 13, 2018 EUR (€)	Feb. 29, 2020 GBP (£)	Aug. 31, 2018 EUR (€)	Dec. 31, 2020 USD ($) item	Dec. 31, 2020 PLN (zł)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 PLN (zł) item	Dec. 31, 2020 GBP (£) item	Dec. 31, 2020 CAD ($) item	Jul. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 06, 2019 USD ($)
Debt Instrument [Line Items]
Amortization of deferred financing costs					$ 1,614,000		$ 551,000	$ 122,000
Amount outstanding					193,811,000		188,961,000
Principal payments					166,000		364,000
Macquarie Capital [Member]
Debt Instrument [Line Items]
Deferred financing costs					11,000,000.0
Amortization of deferred financing costs					1,600,000		100,000
Casinos Poland [Member]
Debt Instrument [Line Items]
Deposits or bank guarantees for payment of casino jackpots and gaming tax obligations under gaming law | zł									zł 3.6
Deposits maintained for payment of casino jackpots and gaming tax obligations					$ 200,000				zł 0.9
Term Loan [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Percentage of the net cash proceeds of non-ordinary course asset sales or certain casualty events					100.00%	100.00%
Maturity date					Dec. 06, 2026	Dec. 06, 2026
Pecentage of quarterly payments equal to original principal					0.25%	0.25%
Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.75 [Member]
Debt Instrument [Line Items]
Percentage of annual excess cash flow					75.00%	75.00%
Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.50 But Less Than Or Equal To 2.75 [Member]
Debt Instrument [Line Items]
Percentage of annual excess cash flow					50.00%	50.00%
Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.25 But Less Than Or Equal To 2.50 [Member]
Debt Instrument [Line Items]
Percentage of annual excess cash flow					25.00%	25.00%
Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Less Than Or Equal To 2.25 [Member]
Debt Instrument [Line Items]
Percentage of annual excess cash flow					0.00%	0.00%
Term Loan [Member] | Macquarie Capital [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate					6.50%				6.50%	6.50%	6.50%
Term Loan [Member] | Macquarie Capital [Member] | ABR [Member]
Debt Instrument [Line Items]
Interest rate					5.50%				5.50%	5.50%	5.50%
UniCredit Loan [Member]
Debt Instrument [Line Items]
Amount outstanding	[1]				$ 1,502,000		1,983,000
UniCredit Loan [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term loan | £			£ 2.0
Expiration date			Sep. 30, 2023
Line of credit facility amount available for borrowing					0
Interest rate percentage points			1.625%
Amount outstanding					1,500,000					£ 1.1
BMO Credit Agreement [Member]
Debt Instrument [Line Items]
Outstanding amount							$ 52,000,000.0
BMO Credit Agreement [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Deposits maintained for payment of casino jackpots and gaming tax obligations					300,000				zł 1.2
Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | zł									5.0
Line of credit facility					0
Line of credit facility amount available for borrowing					1,300,000				5.0
Amount outstanding					$ 0
Line Of Credit With mBank [Member] | Casinos Poland [Member] | WIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points					1.80%	1.80%
Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 2,700,000				10.0
Line of credit amount that can only be used to secure bank guarantees					$ 2,000,000.0	zł 7.5
Term of credit agreement					2 years	2 years
Expiration date					Oct. 14, 2022	Oct. 14, 2022
Line of credit facility amount available for borrowing					$ 700,000				zł 2.5
Line Of Credit With mBank [Member] | Casinos Poland [Member] | WIBOR [Member]
Debt Instrument [Line Items]
Interest rate					2.10%				2.10%	2.10%	2.10%
CDR Financing Obligation [Member] | Century Downs Racetrack And Casino [Member]
Debt Instrument [Line Items]
Outstanding financing obligation					$ 15,300,000						$ 19.5
Line Of Credit With Alior Bank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Interest rate percentage points					1.55%	1.55%
Guarantee From mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Deposits or bank guarantees for payment of casino jackpots and gaming tax obligations under gaming law					$ 1,000,000.0				zł 3.6
Revolving Credit Facility [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity														$ 10,000,000.0
Line of credit facility amount available for borrowing					$ 9,950,000
Fronting fee percentage					0.125%	0.125%
Revolving credit facility, amount drew													$ 9,950,000
Maturity date					Dec. 06, 2024	Dec. 06, 2024
Consolidated First Lien Net Leverage Ratio Greater Than 2.75 [Member] | Macquarie Capital [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate					4.25%				4.25%	4.25%	4.25%
Consolidated First Lien Net Leverage Ratio Greater Than 2.75 [Member] | Macquarie Capital [Member] | ABR [Member]
Debt Instrument [Line Items]
Interest rate					3.25%				3.25%	3.25%	3.25%
Consolidated First Lien Net Leverage Ratio Less Than 2.75 [Member] | Macquarie Capital [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate					4.00%				4.00%	4.00%	4.00%
Consolidated First Lien Net Leverage Ratio Less Than 2.75 [Member] | Macquarie Capital [Member] | ABR [Member]
Debt Instrument [Line Items]
Interest rate					3.00%				3.00%	3.00%	3.00%
Letter Of Credit [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Line of credit facility												$ 50,000
Credit Agreement [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity														180,000,000.0
Credit Agreement [Member] | Term Loan [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity														170,000,000.0
Amount outstanding					$ 168,300,000
Credit Agreement [Member] | Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Number of credit agreements | item					5				5	5	5
Credit Agreement [Member] | Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Line of credit facility secured amount | zł									zł 8.0
Required amount to maintain in cash inflows and financial covenants | zł						zł 5.0
First Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | zł									3.0
Term of credit agreement					3 years	3 years
Expiration date					Nov. 30, 2021	Nov. 30, 2021
Amount outstanding					$ 400,000				1.4
First Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member] | WIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points					1.70%	1.70%
Second Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | zł									4.0
Term of credit agreement					3 years	3 years
Expiration date					Nov. 30, 2021	Nov. 30, 2021
Line of credit facility amount available for borrowing					$ 0
Amount outstanding					$ 500,000				1.9
Required amount to maintain in cash inflows and financial covenants | zł						zł 7.0
Second Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member] | WIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points					1.70%	1.70%
Third Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | zł									2.5
Term of credit agreement					4 years	4 years
Expiration date					Nov. 30, 2022	Nov. 30, 2022
Amount outstanding					$ 400,000				zł 1.5
Required amount to maintain in cash inflows and financial covenants | zł						zł 7.0
Third Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member] | WIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points					1.90%	1.90%
UniCredit Agreement [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Line of credit facility | €				€ 7.0
Guaranteed amount | €		€ 7.0
Amount outstanding													$ 7,400,000
UniCredit Agreement [Member] | Century Resorts Management [Member] | EURIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points				1.50%
UniCredit Agreement [Member] | Century Resorts Management [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points				1.50%
UniCredit Agreement Term 1 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of credit agreement					1 month	1 month
UniCredit Agreement Term 2 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of credit agreement					3 months	3 months
UniCredit Agreement Term 3 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of credit agreement					6 months	6 months
UniCredit Agreement Term 4 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of credit agreement					9 months	9 months
UniCredit Agreement Term 5 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of credit agreement					12 months	12 months
Revolving Credit Facility - Financial Covenant [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Financial maintenance covenant					$ 3,500,000
Minimum [Member] | Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.75 [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio					2.75				2.75	2.75	2.75
Minimum [Member] | Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.50 But Less Than Or Equal To 2.75 [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio					2.50				2.50	2.50	2.50
Minimum [Member] | Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.25 But Less Than Or Equal To 2.50 [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio					2.25				2.25	2.25	2.25
Minimum [Member] | Revolving Credit Facility [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio					2.75				2.75	2.75	2.75
Percentage of principal amount of unused commitments					0.375%	0.375%
Minimum [Member] | Credit Agreement [Member] | Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Profit margin					0.40%	0.40%
Debt ratio					60				60	60	60
Minimum [Member] | First Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Profit margin					0.30%	0.30%
Minimum [Member] | Second Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Liquidity ratio					0.6				0.6	0.6	0.6
Minimum [Member] | Third Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Liquidity ratio					0.6				0.6	0.6	0.6
Debt ratio					70				70	70	70
Maximum [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio					2.75				2.75	2.75	2.75
Maximum [Member] | Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.50 But Less Than Or Equal To 2.75 [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio					2.75				2.75	2.75	2.75
Maximum [Member] | Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.25 But Less Than Or Equal To 2.50 [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio					2.50				2.50	2.50	2.50
Maximum [Member] | Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Less Than Or Equal To 2.25 [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio					2.25				2.25	2.25	2.25
Maximum [Member] | Revolving Credit Facility [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Commitment fees					$ 100,000
Percentage of principal amount of unused commitments					0.50%	0.50%
Maximum [Member] | Letter Of Credit [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity														$ 5,000,000.0
Maximum [Member] | Credit Agreement [Member] | Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Liquidity ratio					1.3				1.3	1.3	1.3
Maximum [Member] | First Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Profit margin					0.40%	0.40%
Liquidity ratio					1.3				1.3	1.3	1.3
Debt ratio					60				60	60	60
Maximum [Member] | Second Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Profit margin					0.50%	0.50%
Debt ratio					70				70	70	70
Maximum [Member] | Third Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Profit margin					0.50%	0.50%
[1] CRM assumed the UniCredit loan to CCB in February 2020.

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Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing.

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