XML 85 R49.htm IDEA: XBRL DOCUMENT v3.3.1.900

Commitments (Tables)

12 Months Ended

Dec. 31, 2015

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,
2016	$	3,982
2017	3,882
2018	4,041
2019	3,740
2020 and thereafter	11,437
	$	27,082

X

- Definition

Commitments Disclosure [Abstract]

+ References

No definition available.

+ Details

Name:	noa_CommitmentsDisclosureAbstract
Namespace Prefix:	noa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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

Name:	us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration