Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) segment item	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting
Number of reporting segments | segment			2
Total revenues	$ 12,601	$ 13,159	$ 41,218	$ 38,761
Cost of revenues	(8,095)	(7,002)	(24,980)	(20,897)
Depreciation and amortization	(562)	(504)	(1,733)	(1,690)
Selling, general and administrative	(3,627)	(3,029)	(11,228)	(9,495)
Interest expense	(114)	(60)	(306)	(185)
Other income			803
Total costs and expenses	(12,398)	(10,595)	(37,444)	(32,267)
Income (loss) before income taxes	203	2,564	3,774	6,494
INCOME TAX EXPENSE	(58)	(653)	(850)	(1,969)
Net income (loss)	145	1,911	2,924	4,525
Total Assets
Property and equipment, net			60,794		$ 41,524
Goodwill (allocated)			5,659		4,857
Other assets, excluding property and equipment and goodwill			15,793		19,723
TOTAL ASSETS			$ 82,246		66,104
Germany
Segment Reporting
Number of hotels owned and operated | item			3
Austria
Segment Reporting
Number of hotels owned and operated | item			1
Corporate
Segment Reporting
Depreciation and amortization	(3)	(3)	$ (8)	(10)
Selling, general and administrative	(662)	(1,066)	(2,755)	(3,440)
Total costs and expenses	(665)	(1,069)	(2,763)	(3,450)
Income (loss) before income taxes	(665)	(1,069)	(2,763)	(3,450)
Net income (loss)	(665)	(1,069)	(2,763)	(3,450)
Total Assets
Property and equipment, net			860		748
Other assets, excluding property and equipment and goodwill			1,112		885
TOTAL ASSETS			1,972		1,633
Casino | Operating Segments
Segment Reporting
Total revenues	8,970	11,968	31,597	35,244
Cost of revenues	(5,930)	(6,360)	(19,216)	(18,991)
Depreciation and amortization	(302)	(332)	(903)	(992)
Selling, general and administrative	(1,867)	(1,634)	(5,485)	(5,097)
Interest expense				(2)
Total costs and expenses	(8,099)	(8,326)	(25,604)	(25,082)
Income (loss) before income taxes	871	3,642	5,993	10,162
INCOME TAX EXPENSE	(58)	(653)	(850)	(1,969)
Net income (loss)	813	2,989	5,143	8,193
Total Assets
Property and equipment, net			31,418		23,550
Goodwill (allocated)			5,512		4,730
Other assets, excluding property and equipment and goodwill			8,977		12,781
TOTAL ASSETS			45,907		41,061
Hotel | Operating Segments
Segment Reporting
Total revenues	3,631	1,191	9,621	3,517
Cost of revenues	(2,165)	(642)	(5,764)	(1,906)
Depreciation and amortization	(257)	(169)	(822)	(688)
Selling, general and administrative	(1,098)	(329)	(2,988)	(958)
Interest expense	(114)	(60)	(306)	(183)
Other income			803
Total costs and expenses	(3,634)	(1,200)	(9,077)	(3,735)
Income (loss) before income taxes	(3)	(9)	544	(218)
Net income (loss)	$ (3)	$ (9)	544	$ (218)
Total Assets
Property and equipment, net			28,516		17,226
Goodwill (allocated)			147		127
Other assets, excluding property and equipment and goodwill			5,704		6,057
TOTAL ASSETS			$ 34,367		$ 23,410