Subsequent Event (Details) € in Thousands, $ in Thousands			12 Months Ended
	Mar. 01, 2017 EUR (€) room item	Mar. 01, 2017 USD ($) item	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Mar. 01, 2017 USD ($) room item
Subsequent event
Cash paid | $			$ 957	$ 275
Hotel Donauwelle Betriebsgesellschaft | Subsequent event
Subsequent event
Percentage of shares acquired	100.00%				100.00%
Hotel rating, number of stars	4				4
Driving time from Route 55 Casino	35	35
Number of rooms | room	176				176
Number of meeting rooms	6	6
Restaurant Capacity, Number of Seats	120				120
Bar Capacity, Number of Seats	40				40
Terrace Capacity, Number of Seats	100				100
Total acquisition cost	€ 4,933				$ 5,199
Purchase price of acquisition	4,263	$ 4,493
Cash paid	1,000	1,054
Loan	€ 3,933	$ 4,145
Loan term	5 years	5 years
Interest rate (as a percent)	2.95%				2.95%
Remaining balance to be paid off or refinanced at end of loan term	€ 1,933				$ 2,037