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SUPPLEMENTARY BALANCE SHEET INFORMATION (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of year	$ 0us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent	[1]	$ 327us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent		$ 308us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Increase (decrease) during the year			0us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease		66us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease
Bad debt written off	0us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs		(327)us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs		(47)us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Balance at end of year	$ 0us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent	[1]	$ 0us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent	[1]	$ 327us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
[1] The changes in allowance for doubtful accounts are composed as follows:

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

X

- Definition

Amount of increase (decrease) in the allowance for doubtful accounts.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 954

-SubTopic 310

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35755819&loc=SL9156395-115594

+ Details

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