CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Parenthetical) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Other comprehensive (loss) income: | |||
| Currency translation adjustment, tax | $ (648) | $ (194) | $ (219) |
| Unrealized gain on marketable securities arising during the period, tax | (2) | 5 | 90 |
| Change in unfunded SERP liability, tax | $ 71 | $ 2 | $ (631) |