SUPPLEMENTAL BALANCE SHEET INFORMATION - Deferred Charges (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred charges
Initial franchise fees	$ 5,101	$ 4,760
Less - accumulated amortization	(1,374)	(1,132)
Total	3,727	3,628
Amortization expense	$ 300	$ 400	$ 500