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BASIS OF PRESENTATION (Details) - Long-term Debt, Type [Domain] - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Jun. 29, 2015 | Aug. 23, 2012
Description of Business |  |  |  |  |  |  |  |
Revenue as a percentage of sales associated with new wind turbine installations | 80.00% |  |  |  |  |  |  |
Liquidity |  |  |  |  |  |  |  |
Cash and cash equivalents and short-term investments | $ 509 |  | $ 20,173 |  |  |  |  |
Increase (decrease) in Cash and cash equivalents and Short-term investments | 19,664 |  |  |  |  |  |  |
Long-term Line of Credit | 527 |  |  |  |  |  |  |
Increase (Decrease) in Inventories | 8,231 | $ (849) |  |  |  |  |  |
Total debt and capital lease obligations | 8,944 |  |  |  |  |  |  |
Obligation to make principal payments on outstanding debt during the next twelve months | 1,306 |  |  |  |  |  |  |
RESTRUCTURING |  |  |  |  |  |  |  |
Restructuring Charges | 13,669 |  | $ 2,153 | $ 5,550 | $ 5,092 | $ 874 |  |
Tower and Weldments |  |  |  |  |  |  |  |
Liquidity |  |  |  |  |  |  |  |
Increase (Decrease) in Inventories | 8,485 |  |  |  |  |  |  |
Credit facility |  |  |  |  |  |  |  |
Description of Business |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 15,000 | $ 20,000
Maximum borrowing capacity of the face value of eligible A/R (as a percent) |  |  |  |  |  |  |  | 85.00%
Maximum percentage of book value of inventories that may be financed |  |  |  |  |  |  |  | 50.00%
Liquidity |  |  |  |  |  |  |  |
Long-term Line of Credit | 527 |  |  |  |  |  |  |
Current borrowing capacity | $ 11,973 |  |  |  |  |  |  |
Term Loan |  |  |  |  |  |  |  |
Liquidity |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | $ 5,000 |

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- Definition Amount of increase (decrease) in cash, cash equivalents, and short term investments. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 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 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 + Details
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