SUPPLEMENTARY CONSOLIDATED BALANCE SHEETS INFORMATION (Detail Textuals) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Supplementary Statement Of Balance Sheet Information [Abstract] | |||
| Depreciation expense | $ 4,089 | $ 3,312 | $ 2,551 |
| Accumulated depreciation reduction amount | $ 5,300 | ||