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COMMITMENTS AND CONTINGENCIES (Operating Lease Commitments, Product Purchase Commitments and Capital Commitments - Narratives) (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| COMMITMENTS AND CONTINGENCIES [Abstract] | |||
| Rental expense | $ 3,001 | $ 2,794 | $ 2,224 |
| Product purchase commitments [Member] | |||
| Commitments and contingencies [Line Items] | |||
| Commitments to purchase goods or services | 7,796 | ||
| Capital commitments [Member] | |||
| Commitments and contingencies [Line Items] | |||
| Commitments to purchase goods or services | $ 176 | ||