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COMMITMENTS AND CONTINGENCIES (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
COMMITMENTS AND CONTINGENCIES. |  |  |
Future minimum payments under operating lease | $ 959,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue |  |
Rent expense under operating leases | $ 936,000us-gaap_OperatingLeasesRentExpenseNet | $ 1,422,000us-gaap_OperatingLeasesRentExpenseNet | $ 1,474,000us-gaap_OperatingLeasesRentExpenseNet
Severance Plan |  |  |
COMMITMENTS AND CONTINGENCIES. |  |  |
Period within which employee is terminated by entity without cause following a change of control | 12 months |  |
Period within which no comparable employment is offered by the entity following a change of control | 30 days |  |
Period within which employee resigns following a change of control due to material change in terms of employment | 12 months |  |
Severance Plan | Minimum |  |  |
COMMITMENTS AND CONTINGENCIES. |  |  |
Period of base salary to be considered for severance payments | 2 months |  |
Severance Plan | Maximum |  |  |
COMMITMENTS AND CONTINGENCIES. |  |  |
Period of base salary to be considered for severance payments | 18 months |  |

X
- Definition Maximum number of months of an employee's then current base salary to be paid as severance under severance plan. + References No definition available. + Details
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X
- Definition Minimum number of months of an employee's then current base salary to be paid as severance under severance plan. + References No definition available. + Details
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X
- Definition Represents the number of months following a change in control when an employee is terminated without cause to be classified as a triggering event for severance payments. + References No definition available. + Details
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X
- Definition Represents the period following change of control within which an employee is not offered comparable employment (new or continuing) by the entity or its successor or acquired and to be considered as triggering event for severance payments. + References No definition available. + Details
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X
- Definition Represents the period within which employee resigns following a change of control due to material change in terms of employment and to be considered as triggering event for severance payments. + References No definition available. + Details
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- Details
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- Details
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X
- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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X
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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X
- Details
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