Intangible assets (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Changes in intangible assets | ||
| Finite-Lived Intangible Assets, Net, Beginning Balance | $ 19,676 | $ 23,413 |
| Amortization expense | (3,594) | (3,682) |
| Impairment loss | (27) | (55) |
| Finite-Lived Intangible Assets, Net, Ending Balance | $ 16,055 | $ 19,676 |
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. No definition available.
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