Commitments, Contingencies and Concentrations of Risk (Tables)

12 Months Ended

Dec. 31, 2016

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
	(dollars in thousands)
2017	$	3,926
2018	3,164
2019	2,496
2020	712
2021	169
Thereafter	230
Total	$	10,697