Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Payments Under Non-cancelable Leases

The following table presents future minimum lease payments under non-cancelable leases (in thousands):

	2016		2017		2018		2019		2020		Thereafter		Total
Lease payments	$	7,785	$	7,583	$	7,583	$	7,139	$	6,722	$	151,200	$	188,012

Schedule of Change in Asset Retirement Obligation

The following table reconciles the value of the asset retirement obligation for the periods presented.

	December 31, 2015		December 31, 2014
Balance at beginning of period	$	501	$	773
Adjustment due to re-estimate	—		(319		)
Accretion expense	34		47
Balance at end of period	$	535	$	501