Commitments, Contingencies and Concentrations of Risk (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of minimum annual lease payments, excluding any renewals and extensions, property taxes, and other operating expenses, due under the agreements

The following schedule shows the minimum annual lease payments, excluding any renewals and extensions, property taxes, and other operating expenses, due under these agreements:

Year ending December 31,	Amount
	(in thousands)
2016	$	3,658
2017	3,095
2018	2,557
2019	2,351
2020	711
Thereafter	400
Total	$	12,772