Purchase Price Allocation - Hotel Kranichhohe (Details) $ / shares in Units, € in Thousands, $ in Thousands			12 Months Ended
	Dec. 21, 2016 EUR (€) room item	Dec. 21, 2016 USD ($) item	Dec. 31, 2016 EUR (€) shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 21, 2016 USD ($) room
Business Combination, Consideration Transferred.
Cash paid | $				$ 957	$ 275
Business Acquisition, Pro Forma Information
Revenues | $				57,555	46,859
Net income | $				$ 6,772	$ 3,684
Weighted Average Number of Shares Outstanding
Basic | shares			8,838,984	8,838,984	8,822,488
Diluted | shares			9,498,578	9,498,578	9,259,553
Earnings Per Share, Basic and Diluted
Basic | $ / shares				$ 0.77	$ 0.42
Diluted | $ / shares				$ 0.71	$ 0.40
Hotel Kranichhöhe
Business Acquisition
Number of Rooms in Hotel | room	107					107
Number of food and beverage outlets	3	3
Number of meeting rooms	18	18
Number of indoor courts	2	2
Number of outdoor courts	2	2
Business Combination, Consideration Transferred.
Cash paid	€ 900	$ 957
Loan	4,000	4,251
Total purchase price consideration	4,900	5,208
Gain on bargain purchase of Hotel Columbus	117	$ 124	€ 117	$ 124
Net Assets	5,017					$ 5,332
Fair value assigned to assets acquired:
Land	1,686					1,792
Buildings	2,360					2,508
Property & equipment	465					494
Inventory	506					538
Net Assets	€ 5,017					$ 5,332