12. COMMITMENTS AND CONTINGENCIES (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Liabilities Unclassified
Letters Of Credit Outstanding	$ 827	$ 1,062
Performance-Related Letter of Credit
Other Liabilities Unclassified
Letters Of Credit Outstanding	235	470
Warranty-Related Letter of Credit
Other Liabilities Unclassified
Letters Of Credit Outstanding	$ 592	$ 592

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

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