Long-Term Debt (Narrative) (Details) $ in Thousands, € in Millions, £ in Millions, zł in Millions, $ in Millions			1 Months Ended	3 Months Ended
	Apr. 01, 2022 USD ($)	Dec. 06, 2019 USD ($)	Nov. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($) item	Mar. 31, 2022 PLN (zł) item	Mar. 31, 2022 EUR (€) item	Mar. 31, 2021 USD ($)	Mar. 31, 2022 PLN (zł) item	Mar. 31, 2022 GBP (£) item	Mar. 31, 2022 EUR (€) item	Mar. 31, 2022 CAD ($) item	Dec. 31, 2021 USD ($)	Jun. 23, 2021 USD ($)	Jun. 23, 2021 EUR (€)	Mar. 31, 2020 USD ($)
Debt Instrument [Line Items]
Amortization of deferred financing costs					$ 391			$ 391
Amount outstanding					188,299								$ 189,179
Principal payments					41			33
Macquarie Capital [Member]
Debt Instrument [Line Items]
Amortization of deferred financing costs					400			400
Macquarie Capital [Member] | Forecast [Member]
Debt Instrument [Line Items]
Amortization of deferred financing costs				$ 7,300
Casinos Poland [Member]
Debt Instrument [Line Items]
Deposits maintained for payment of casino jackpots and gaming tax obligations | zł									zł 3.6
Deposits guarantees for payment of prizes and giveaways					$ 200				0.7
Century Downs Racetrack And Casino [Member]
Debt Instrument [Line Items]
Options to purchase land | item					4	4	4
First option date					Jul. 01, 2023	Jul. 01, 2023	Jul. 01, 2023
Principal payments					$ 0
Term Loan [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Amount outstanding					166,200
UniCredit Term Loans [Member]
Debt Instrument [Line Items]
Amount outstanding					6,388
BMO Credit Agreement [Member]
Debt Instrument [Line Items]
Repayment amount		$ 52,000
Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | zł									5.0
Line of credit facility amount available for borrowing					1,200				5.0
Amount outstanding					$ 0
Line Of Credit With mBank [Member] | Casinos Poland [Member] | WIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points					2.40%	2.40%	2.40%
Line Of Credit With mBank [Member]
Debt Instrument [Line Items]
Term of credit agreement					2 years	2 years	2 years
Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 2,400				10.0
Line of credit amount that can only be used to secure bank guarantees					$ 1,800	zł 7.5
Expiration date					Oct. 14, 2022	Oct. 14, 2022	Oct. 14, 2022
Line of credit facility amount available for borrowing					$ 600				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%	2.10%
Guarantee From mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Bank guarantee issued for payment of casino jackpots and gaming tax obligations					$ 900
Deposits maintained for payment of casino jackpots and gaming tax obligations					900				zł 3.6
Deposit for secured by land owned					300				zł 1.2
Revolving Credit Facility [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		10,000
Line of credit facility amount available for borrowing					$ 10,000
Line Of Credit [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Line of credit facility														$ 7,400
Line Of Credit [Member] | Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Number of short-term lines of credit | item					2				2	2	2	2
Letter Of Credit [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		5,000
Credit Agreement [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		180,000
Credit Agreement [Member] | Macquarie Capital [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Repayment amount	$ 166,200
Credit Agreement [Member] | Term Loan [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 170,000
Credit Agreement [Member] | UniCredit Term Loans [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Number of credit agreements | item					2				2	2	2	2
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
Credit Agreement [Member] | Credit Agreements With Mbank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Number of credit agreements | item					1				1	1	1	1
First Credit Agreement [Member] | UniCredit Term Loans [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Line of credit facility | £										£ 2.0
Expiration date					Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2023
Amount outstanding					$ 800
Borrowing availability					$ 0
First Credit Agreement [Member] | UniCredit Term Loans [Member] | Century Resorts Management [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points					1.625%	1.625%	1.625%
First Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 3,000
First Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member] | WIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points			1.70%
Second Credit Agreement [Member] | UniCredit Term Loans [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Interest rate					2.875%				2.875%	2.875%	2.875%	2.875%
Maximum borrowing capacity																$ 7,400
Term loan | €															€ 6.0
Guaranteed amount | €							€ 6.0
Maturity date					Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2025
Amount outstanding					$ 5,600						€ 5.0
Borrowing availability					$ 0
Second Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 4,000
Third Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | zł									zł 2.5
Expiration date					Nov. 30, 2022	Nov. 30, 2022	Nov. 30, 2022
Term of borrowing					4 years	4 years	4 years
Amount outstanding					$ 200				zł 0.7
Borrowing availability					$ 0
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%	1.90%
Minimum [Member] | Guarantee From mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Terminate date					2024-06	2024-06	2024-06
Minimum [Member] | Credit Agreement [Member] | Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Profit margin					0.40%	0.40%	0.40%
Liquidity ratio					1.3				1.3	1.3	1.3	1.3
Minimum [Member] | Third Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Profit margin					0.50%	0.50%	0.50%
Liquidity ratio					0.6				0.6	0.6	0.6	0.6
Maximum [Member] | Guarantee From mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Terminate date					2026-01	2026-01	2026-01
Maximum [Member] | Revolving Credit Facility [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Commitment fees					$ 100			$ 100
Maximum [Member] | Letter Of Credit [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 10,000
Maximum [Member] | Credit Agreement [Member] | Line Of Credit With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Debt ratio					60				60	60	60	60
Maximum [Member] | Third Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Debt ratio					70				70	70	70	70
Century Downs Racetrack And Casino [Member]
Debt Instrument [Line Items]
Outstanding balance on financing obligation					$ 15,600							$ 19.5