Commitments and Contingencies - (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments Under Non-Cancelable Operating Lease

At December 31, 2017, future minimum rental payments under these non-cancelable operating leases were as follows (unaudited):

Less than 1 year	$	8,015
Year 2	7,521
Year 3	7,566
Year 4	7,448
Year 5	7,147
Thereafter	114,729
	$	152,426