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BASIS OF PRESENTATION (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended | 39 Months Ended | 3 Months Ended | 12 Months Ended | 39 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2014 | Mar. 31, 2014 Non-cash charges | Dec. 31, 2013 Non-cash charges | Dec. 31, 2012 Non-cash charges | Dec. 31, 2011 Non-cash charges | Mar. 31, 2014 Non-cash charges | Mar. 31, 2014 Credit facility | Aug. 23, 2012 Credit facility
Description of Business |  |  |  |  |  |  |  |  |  |  |  |
Revenue as a percentage of sales associated with new wind turbine installations | 81.00% |  |  |  |  |  |  |  |  |  |  |
BASIS OF PRESENTATION |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  | $ 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%
Current borrowing capacity |  |  |  |  |  |  |  |  |  |  | 15,201 |
Liquidity |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents and short-term investments | 11,396 | 26,079 |  |  | 11,396 |  |  |  |  |  |  |
Minimum period for which liquidity needs will be met from current cash resources and cash to be generated from operations over the next twelve months | 12 months |  |  |  |  |  |  |  |  |  |  |
Obligation to make principal payments on outstanding debt during the next twelve months | 179 |  |  |  | 179 |  |  |  |  |  |  |
Restructuring charges incurred | 770 | 5,550 | 5,092 | 874 | 12,286 | 0 | 3,284 | 1,224 | 297 | 4,805 |  |
Expected cost to be incurred to implement the restructuring plan | $ 13,270 |  |  |  |  | $ 4,805 |  |  |  |  |  |

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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