Pension Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The following table presents the components of pension expense and components of other post-retirement benefit expense (income) for HNH's pension plans and the pension plan of CoSine's API subsidiary:

	Pension Benefits
	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Interest cost	$	5,664		$	5,248		$	10,424		$	10,496
Expected return on plan assets	(6,513		)	(6,050		)	(12,030		)	(12,100		)
Administrative costs / investment management fees	189			—			189			—
Amortization of actuarial loss	1,595			577			3,190			1,154
Total	$	935		$	(225	)	$	1,773		$	(450	)