Pensions

3 Months Ended

Mar. 31, 2016

Pensions [Abstract]

Pensions

4. Pensions

Components of Net Periodic Pension Cost

	Three Months Ended March 31
	2016			2015
Service cost	$	254		$	291
Interest cost		400			379
Expected return on plan assets		(558	)		(557	)
Amortization of actuarial loss		140			176
Amortization of prior service cost		(3	)		(3	)
Rate-regulated adjustment		342			289
Net periodic pension expense	$	575		$	575

Employer Contributions

As of March 31, 2016, contributions of $2,300 had been made to the Company's pension plans, and the Company does not expect to contribute any additional amount during the remainder of 2016.