Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Annual Rental Commitments under Operating Leases

Future approximate minimum annual rental commitments at December 31, 2016 under non-cancelable operating leases are as follows (in thousands):

Year Ending December 31,
2017	$	6,045
2018	4,201
2019	2,766
2020	2,012
2021	1,673
Thereafter	1,919