11. Leases

The Company leases certain facilities and equipment for use in the Company’s operations under several operating agreements. Certain of the leases provide for escalation or renegotiation of rental rates, and for extension of lease terms. Total rent expense for the Company amounted to $4.2 million, $4.6 million and $4.5 million for the years ended December 31, 2017, 2016 and 2015, respectively.

Information on the aggregate minimum rental commitments under non-cancelable operating leases is as follows (dollars in thousands):


Years ended, December 31:
2018	$	2,097
2019		1,910
2020		1,883
2021		1,266
2022		433
Thereafter		5,481
	$	13,070