2. Inventories, net (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Inventories Net Details 1
Balance, beginning of year	$ 2,960RWC_BalanceBeginningOfYear	$ 2,832RWC_BalanceBeginningOfYear
Charged to cost of sales	9us-gaap_CostOfGoodsAndServicesSold	140us-gaap_CostOfGoodsAndServicesSold
Disposal of inventory	(1,266)RWC_DisposalOfInventory	(12)RWC_DisposalOfInventory
Balance, end of year	$ 1,703RWC_BalanceEndOfYear	$ 2,960RWC_BalanceEndOfYear

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 2

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2(a),(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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