Quarterly report pursuant to Section 13 or 15(d)

Multiemployer Pension Plans

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Multiemployer Pension Plans
6 Months Ended
Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Multiemployer Pension Plans
MULTI-EMPLOYER PENSION PLANS
MNRPF. The cumulative funding deficits of the MNRPF are currently being recovered by additional annual contributions from current employers that are subject to adjustment following the results of future tri-annual actuarial valuations. Prior to 2012, the Company was invoiced and expensed $0.4 million for its allocated share of the then cumulative funding deficits. On February 25, 2015, the High Court approved a new deficit contribution scheme whereby any funding deficit of the MNRPF is to be remedied through funding contributions from all participating current and former employers. Based on an actuarial valuation in 2014, the potential cumulative funding deficit of the MNRPF was $510.6 million (£325.0 million). The MNRPF’s trustee estimates the Company’s allocated share of the cumulative funding deficit to be $6.6 million (£4.2 million), including portions deemed uncollectible due to the non-existence or liquidation of certain former employers. The Company will recognize payroll related operating expenses in the periods invoices are received.
AMOPP. During the six months ended June 30, 2015, the Company received notification from the AMOPP that the Company's withdrawal liability as of September 30, 2014 was $39.9 million based on an actuarial valuation performed as of that date. That liability may change in future years based on various factors, primarily employee census. As of June 30, 2015, the Company has no intention to withdraw from the AMOPP and no deficit amounts have been invoiced. Depending upon the results of the future actuarial valuations and the ten-year rehabilitation plan, it is possible that the AMOPP will experience further funding deficits, requiring the Company to recognize additional payroll related operating expenses in the periods invoices are received or contribution levels are increased.