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COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Thousands, unless otherwise specified |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  | 3 Months Ended | 6 Months Ended |  |  | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012 | Sep. 30, 2005 Lease agreement entered into September 2005 | Jun. 30, 2013 Lease agreement entered into September 2005 | Jun. 30, 2012 Lease agreement entered into September 2005 | Jun. 30, 2013 Lease agreement entered into September 2005 | Jun. 30, 2012 Lease agreement entered into September 2005 | Dec. 31, 2012 Lease agreement entered into September 2005 | Jun. 30, 2013 Lease agreement entered into April 2011 | Jun. 30, 2012 Lease agreement entered into April 2011 | Jun. 30, 2013 Lease agreement entered into April 2011 | Jun. 30, 2012 Lease agreement entered into April 2011 | Dec. 31, 2012 Lease agreement entered into April 2011 | Jun. 30, 2013 Lease agreement entered into April 2011 Period during June 1, 2011 to September 30, 2025 | Apr. 30, 2011 Sub-sublease agreement | Jun. 30, 2013 Sub-sublease agreement Period until May 31, 2015 | Jun. 30, 2013 Sub-sublease agreement Period after May 31, 2015 until expiration of lease term | Jun. 30, 2013 Direct lease agreement Period from October 1, 2018 to April 30, 2023 | Jun. 30, 2013 Direct lease agreement Period from May 1, 2023 to September 30, 2025
Commitments and contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease term |  |  | 15 years |  |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |
Rent expense |  |  |  | $ 22 | $ 202 | $ 131 | $ 570 |  | $ 390 | $ 390 | $ 779 | $ 779 |  |  |  |  |  |  |
Current portion of lease obligations | 444 | 682 |  | 444 |  | 444 |  | 682 |  |  |  |  |  |  |  |  |  |  |
Long-term lease obligations | 2,828 | 2,465 |  | 746 |  | 746 |  | 672 | 2,082 |  | 2,082 |  | 1,793 |  |  |  |  |  |
Future minimum rental payments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remainder of 2013 |  |  |  | 259 |  | 259 |  |  | 491 |  | 491 |  |  |  |  |  |  |  |
2014 |  |  |  | 518 |  | 518 |  |  | 982 |  | 982 |  |  |  |  |  |  |  |
2015 |  |  |  | 518 |  | 518 |  |  | 1,037 |  | 1,037 |  |  |  |  |  |  |  |
2016 |  |  |  | 529 |  | 529 |  |  | 1,076 |  | 1,076 |  |  |  |  |  |  |  |
2017 |  |  |  | 550 |  | 550 |  |  | 1,076 |  | 1,076 |  |  |  |  |  |  |  |
Remaining term of the lease |  |  |  | 1,972 |  | 1,972 |  |  | 16,506 |  | 16,506 |  |  |  |  |  |  |  |
Monthly rental payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 82 | 90 | 186 | 204
Monthly straight-line rental expense |  |  |  |  |  |  |  |  |  |  |  |  |  | 130 |  |  |  |  |
Obligation of sublessor towards the cost of alterations of office space |  |  |  |  |  |  |  |  |  |  | $ 472 |  |  |  |  |  |  |  |

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- Definition For a classified balance sheet, the cumulative difference as of the balance sheet date between the payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, within one year of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39927-112707 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 19 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Technical Bulletin (FTB) -Number 85-3 -Paragraph 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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