Amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).Q1)

-URI http://asc.fasb.org/extlink&oid=6600647&loc=d3e214044-122780

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A

Name:	us-gaap_DeferredRevenueRevenueRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Dana Claim (Details) (USD $)	1 Months Ended	3 Months Ended
Dana Claim (Details) (USD $)	Aug. 07, 2007 Supply_Agreements	Mar. 31, 2013	Apr. 01, 2012	Mar. 03, 2006 Subsidiaries
Dana Claim (Textual) [Abstract]
Number of U.S subsidiaries of Dana Corporation				40
Number of supply agreements replaced	3
Revised contract termination year	2014
Aggregate claim value, face amount	$ 89,900,000
Estimated fair value	76,483,000
Deferred revenue recognized		$ 2,000,000	$ 1,973,000