Commitments and Contingencies

Commitments

The Company makes commitments in the normal course of business. The Company leases equipment and facilities under non-cancelable operating leases, some of which contain renewal options. Total future minimum lease payments consisted of the following at December 31, 2017:



	Total leases
	(In thousands)
2018	$	2,448
2019	1,979
2020	1,782
2021	1,570
2022	1,126
Thereafter	3,325
Total lease obligations	$	12,230

Total rental expense charged to operations under all operating leases was $3.6 million, $3.3 million and $3.2 million in 2017, 2016 and 2015, respectively.

Contingencies

In the normal course of business, the Company is named in legal proceedings. There are currently no material legal proceedings pending with respect to the Company.

The Company is subject to contingencies related to environmental laws and regulations. A future change in circumstances with respect to specific matters or with respect to sites formerly or currently owned or operated by the Company, off-site disposal locations used by the Company, and property owned by third parties that is near such sites, could result in future costs to the Company and such amounts could be material. Expenditures for compliance with environmental control provisions and regulations during 2017, 2016 and 2015 were not material.

The Company relies on single suppliers for most brass castings and certain resin and electronic subassemblies in several of its product lines. The Company believes these items would be available from other sources, but that the loss of certain suppliers would result in a higher cost of materials, delivery delays, short-term increases in inventory and higher quality control costs in the short term. The Company attempts to mitigate these risks by working closely with key suppliers, purchasing minimal amounts from alternative suppliers and by purchasing business interruption insurance where appropriate.

The Company reevaluates its exposures on a periodic basis and makes adjustments to reserves as appropriate.