Operating Lease Agreements

12 Months Ended

Dec. 31, 2015

Operating Lease Agreements [Abstract]

Operating Lease Agreements

9.  OPERATING LEASE AGREEMENTS

The future minimum rental commitments, exclusive of cost escalation clauses, at December 31, 2015, for all of the Company's operating leases with remaining non-cancelable terms in excess of one year are as follows:

(Dollars in thousands)
2016	$	13,239
2017		12,889
2018		13,111
2019		12,929
2020		12,594
Thereafter		16,511
Net commitments	$	81,273

All of these leases, the expiration terms of which range from 2018 to 2027, are for the rental of office space.  Rental expense was $14,145 thousand, $13,028 thousand and $12,405 thousand for the years ended December 31, 2015, 2014 and 2013, respectively.