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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] | Future minimum lease payments to be paid over the terms of the leases are as follows (amounts in thousands):
2015 |  |  | $ | 1,518 |
2016 |  |  | 1,518 |
2017 |  |  | 1,518 |
2018 |  |  | 1,518 |
2019 |  |  | 1,518 |
Thereafter |  |  | 58,248 |
Total |  |  | $ | 65,838 |
Schedule of Multiemployer Plans | Contributions we made to the multi-employer plans for the years ended December 31, 2014, 2013 and 2012 are included in the table below (amounts in thousands):
Benefit Plan |  | 2014 |  | 2013 |  | 2012
Pension Plans (pension and annuity)* |  | $ | 2,871 |  |  | $ | 1,201 |  |  | $ | 768 |
Health Plans** |  | 7,628 |  |  | 3,319 |  |  | 2,013 |
Other*** |  | 319 |  |  | 232 |  |  | 160 |
Total plan contributions |  | $ | 10,818 |  |  | $ | 4,752 |  |  | $ | 2,941 |
* | Pension plans include $0.8 million, $0.4 million and $0.3 million for the years ended 2014, 2013 and 2012, respectively, from multiemployer plans not discussed above.
** Health plans include $1.5 million, $0.8 million and $0.5 million for the years ended 2014, 2013 and 2012, respectively, from multiemployer plans not discussed above. *** Other includes $0.08 million, $0.05 million and $0.08 million for the years ended 2014, 2013 and 2012, respectively, in connection with other multiemployer plans not discussed above for union costs which were not itemized between pension and health plans.

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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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- Definition Tabular disclosure of the quantitative and qualitative information related to multiemployer plans in which the employer participates. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -URI http://asc.fasb.org/subtopic&trid=2235144 + Details
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