Leases

Minimum future obligations under all non-cancelable operating leases as of December 31, 2015 are as follows:



	Operating Leases
2016	$	3,370
2017	2,973
2018	2,175
2019	1,886
2020	1,408
Thereafter	1,147
Total minimum lease obligations	$	12,959

Rent expense for operating leases charged to operations was as follows :



	Year Ended December 31,
	2015		2014		2013
Rent expense	$	3,550	$	4,300	$	3,936

Operating leases include a variety of properties around the world. These properties are used as manufacturing facilities, distribution centers and sales offices. Lease expirations range from 2016 to 2026 with breaking periods specified in the lease agreements. Sublease income was $474 in 2015. Future sublease income is $468 in 2016 and $468 in 2017. Some of CTS' operating leases include renewal options and escalation clauses.

In the fourth quarter of 2012, one of CTS' foreign locations entered into a sale-leaseback transaction. As a result of this transaction, a deferred gain of approximately $4,500 was being amortized over the 6 year expected lease term. During 2015, CTS terminated the lease and recognized the remaining unamortized deferred gain into income. A gain of $2,108 was included in continuing operations in the Consolidated Statements of Earnings (Loss) for the year ended December 31, 2015.