Transportation segment intangible assets (Details) (Transportation Business Acquisition, USD $) In Thousands, unless otherwise specified	Sep. 30, 2014
Transportation Business Acquisition
Amortization of intangible assets 2015	$ 414
Amortization of intangible assets 2016	414
Amortization of intangible assets 2017	406
Amortization of intangible assets 2018	394
Amortization of intangible assets 2019	382
Total amortization expense for the next five years	$ 2,010

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References