Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Accrued payroll and related	$ 5,888	$ 6,817
Accrued occupancy costs	10,009	8,594
Accrued insurance claims	2,282	2,786
Accrued other	6,490	7,710
Accrued Liabilities, Current	$ 24,669	$ 25,907