Long-Term Debt (Narrative) (Details) $ in Thousands, € in Millions, £ in Millions, zł in Millions, $ in Millions		3 Months Ended
	Apr. 25, 2019	Mar. 31, 2020 USD ($) item	Mar. 31, 2020 PLN (zł) item	Mar. 31, 2019 USD ($)	Apr. 30, 2020 PLN (zł)	Apr. 01, 2020	Mar. 31, 2020 GBP (£) item	Mar. 31, 2020 CAD ($) item	Mar. 31, 2020 EUR (€) item	Mar. 31, 2020 USD ($) item	Mar. 31, 2020 PLN (zł) item	Dec. 31, 2019 USD ($)	Dec. 06, 2019 USD ($)	Aug. 31, 2017 GBP (£)
Debt Instrument [Line Items]
Amortization of deferred financing costs		$ 398		$ 30
Amount outstanding										$ 204,119		$ 188,961
Principal payments		43		$ 54
Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity													$ 180,000
Deferred financing costs										10,600
Amortization of deferred financing costs		$ 400
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
Century Downs Racetrack And Casino [Member]
Debt Instrument [Line Items]
Options to purchase land | item		4	4
First option date		Jul. 01, 2023	Jul. 01, 2023
Principal payments		$ 0
Century Resorts Management [Member]
Debt Instrument [Line Items]
Line of credit facility							£ 1.5			1,900				£ 2.0
Expiration date		Sep. 30, 2023	Sep. 30, 2023
Guaranteed amount		$ 600
Century Resorts Management [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points		1.625%	1.625%
Term Loan [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity													170,000
Percentage of the net cash proceeds of non-ordinary course asset sales or certain casualty events		100.00%	100.00%
Percentage of annual excess cash flow		50.00%	50.00%
Prepayment premium percentage		1.00%	1.00%
Maturity date		Dec. 06, 2026	Dec. 06, 2026
Amount outstanding										$ 169,500
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 2.25, But Less Than 2.75 [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 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							5.50%	5.50%	5.50%	5.50%	5.50%
Term Loan [Member] | Macquarie Capital [Member] | ABR [Member]
Debt Instrument [Line Items]
Interest rate							4.50%	4.50%	4.50%	4.50%	4.50%
BMO Credit Agreement [Member]
Debt Instrument [Line Items]
Repayment amount		$ 52,000
BMO Credit Agreement [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Deposits maintained for payment of casino jackpots and gaming tax obligations										$ 300	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 amount available for borrowing										1,200	5.0
Interest rate percentage points		1.40%	1.40%
Amount outstanding										0
Line Of Credit With Alior Bank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | zł											13.0
Line of credit amount that can only be used to secure bank guarantees | zł			zł 2.0
Line of credit facility amount available for borrowing										2,300	9.6
Guaranteed amount		$ 800	zł 3.4
Interest rate percentage points		1.55%	1.55%
Guarantee From mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Bank guarantee issued for payment of casino jackpots and gaming tax obligations										900	3.6
Deposits maintained for payment of casino jackpots and gaming tax obligations										200	zł 0.8
Revolving Credit Facility [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity													10,000
Percentage of principal amount of unused commitments		0.50%	0.50%
Fronting fee percentage		0.125%	0.125%
Revolving credit facility, amount drew										10,000
Maturity date		Dec. 06, 2024	Dec. 06, 2024
Amount outstanding										$ 10,000
Revolving Credit Facility [Member] | Macquarie Capital [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate							4.25%	4.25%	4.25%	4.25%	4.25%
Revolving Credit Facility [Member] | Macquarie Capital [Member] | LIBOR [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.75 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Interest rate						4.25%
Revolving Credit Facility [Member] | Macquarie Capital [Member] | LIBOR [Member] | Consolidated First Lien Net Leverage Ratio Less Than 2.75 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Interest rate						4.00%
Revolving Credit Facility [Member] | Macquarie Capital [Member] | ABR [Member]
Debt Instrument [Line Items]
Interest rate							3.25%	3.25%	3.25%	3.25%	3.25%
Revolving Credit Facility [Member] | Macquarie Capital [Member] | ABR [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.75 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Interest rate						3.25%
Revolving Credit Facility [Member] | Macquarie Capital [Member] | ABR [Member] | Consolidated First Lien Net Leverage Ratio Less Than 2.75 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Interest rate						3.00%
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] | Casinos Poland [Member]
Debt Instrument [Line Items]
Number of credit agreements | item							4	4	4	4	4
Credit Agreement [Member] | Line of Credit with mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Expiration date	May 28, 2020
Credit Agreement After April 30, 2020 Through April 30, 2021 [Member] | Line Of Credit With Alior Bank [Member] | Casinos Poland [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | zł					zł 4.0
First Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity | zł											zł 3.0
Expiration date		Nov. 30, 2021	Nov. 30, 2021
Term of borrowing		3 years	3 years
Amount outstanding										$ 500	2.0
Borrowing availability		$ 0
Required amount to maintain in cash inflows and financial covenants | zł			zł 1.0
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
Expiration date		Nov. 30, 2021	Nov. 30, 2021
Term of borrowing		3 years	3 years
Amount outstanding										700	2.7
Borrowing availability		$ 0
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
Expiration date		Nov. 30, 2022	Nov. 30, 2022
Term of borrowing		4 years	4 years
Amount outstanding										500	zł 1.9
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%
UniCredit Agreement [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Line of credit facility									€ 7.0	$ 7,700
Line of credit facility secured amount | €									€ 7.0
UniCredit Agreement [Member] | Century Resorts Management [Member] | EURIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points		1.50%	1.50%
UniCredit Agreement [Member] | Century Resorts Management [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate percentage points		1.50%	1.50%
UniCredit Agreement Term 1 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of borrowing		1 month	1 month
UniCredit Agreement Term 2 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of borrowing		3 months	3 months
UniCredit Agreement Term 3 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of borrowing		6 months	6 months
UniCredit Agreement Term 4 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of borrowing		9 months	9 months
UniCredit Agreement Term 5 [Member] | Century Resorts Management [Member]
Debt Instrument [Line Items]
Term of borrowing		12 months	12 months
Minimum [Member] | Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.25, But Less Than 2.75 [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio							2.25	2.25	2.25	2.25	2.25
Minimum [Member] | Revolving Credit Facility [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Percentage of principal amount of unused commitments		0.375%	0.375%
Minimum [Member] | Revolving Credit Facility [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.75 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio						2.75
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]
Profit margin		0.50%	0.50%
Liquidity ratio							0.6	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]
Profit margin		0.50%	0.50%
Liquidity ratio							0.6	0.6	0.6	0.6	0.6
Maximum [Member] | Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Greater Than 2.25, But Less Than 2.75 [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio							2.75	2.75	2.75	2.75	2.75
Maximum [Member] | Term Loan [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Less Than 2.25 [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio							2.25	2.25	2.25	2.25	2.25
Maximum [Member] | Revolving Credit Facility [Member] | Macquarie Capital [Member]
Debt Instrument [Line Items]
Commitment fees		$ 100
Maximum [Member] | Revolving Credit Facility [Member] | Macquarie Capital [Member] | Consolidated First Lien Net Leverage Ratio Less Than 2.75 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Consolidated First Lien Net Leverage Ratio						2.75
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	1.3
Debt ratio							60	60	60	60	60
Maximum [Member] | Second Credit Agreement [Member] | Term Loan With mBank [Member] | Casinos Poland [Member]
Debt Instrument [Line Items]
Debt ratio							70	70	70	70	70
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								$ 19.5		$ 13,700