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Commitments (Tables) | 12 Months Ended
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Dec. 31, 2013
Commitments Disclosure [Abstract] |
Schedule of future minimum lease payments for operating leases | The annual future minimum lease payments for heavy equipment, office equipment and premises in respect of operating leases, excluding contingent rentals, for the next five years and thereafter are as follows:
For the year ending December 31, |
2014 | $ | 19,750 |
2015 | 8,321 |
2016 | 4,700 |
2017 | 4,465 |
2018 and thereafter | 21,406 |
| $ | 58,642 |

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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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