SUPPLEMENTAL BALANCE SHEET INFORMATION - Deferred Charges (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred charges
Initial franchise fees	$ 4,760	$ 6,435
Deferred financing costs	9,804	8,628
Deferred charges, gross	14,564	15,063
Less accumulated amortization	5,376	5,422
Deferred charges, net	9,188	9,641
Amortization expense
Initial franchise fees	377	485	$ 411
Deferred financing costs	1,723	1,549	1,854
Amortization expense	2,100	2,034	$ 2,265
Future amortization expense
2016	2,056
2017	1,747
2018	1,255
2019	757
2020	647
Thereafter	2,726
Deferred charges, net	$ 9,188	$ 9,641