| Comprehensive Income (Loss) Note [Text Block] |
Accumulated Other Comprehensive Income: The changes in accumulated other comprehensive income for 2012, 2011, and 2010 is as follows: | | | | | | | | | | | | | | | | | | Change in Period | | Tax (Expense) Benefit | | Effect of Exchange Rates | | Net Change | Year Ended December 31, 2012: | | | | | | | | Foreign currency translation | $ | 4,395 |
| | $ | — |
| | $ | — |
| | $ | 4,395 |
| Pension and postretirement plan adjustment | (13,281 | ) | | 5,213 |
| | (911 | ) | | (8,979 | ) | Unrealized gains on hedging activities | 4,904 |
| | (1,214 | ) | | 9 |
| | 3,699 |
| Other comprehensive income (loss) | $ | (3,982 | ) | | $ | 3,999 |
| | $ | (902 | ) | | $ | (885 | ) | Year Ended December 31, 2011: | | | | | | | | Foreign currency translation | $ | (17,830 | ) | | $ | — |
| | $ | — |
| | $ | (17,830 | ) | Pension and postretirement plan adjustment | (1,584 | ) | | 76 |
| | 321 |
| | (1,187 | ) | Unrealized gains on hedging activities | (2,835 | ) | | 612 |
| | 154 |
| | (2,069 | ) | Other comprehensive income (loss) | $ | (22,249 | ) | | $ | 688 |
| | $ | 475 |
| | $ | (21,086 | ) | Year Ended December 31, 2010: | | | | | | | | Foreign currency translation | $ | (3,879 | ) | | $ | — |
| | $ | — |
| | $ | (3,879 | ) | Pension and postretirement plan adjustment | (10,743 | ) | | (6,968 | ) | | 985 |
| | (16,726 | ) | Unrealized gains on hedging activities | (1,140 | ) | | 210 |
| | 70 |
| | (860 | ) | Other comprehensive income (loss) | $ | (15,762 | ) | | $ | (6,758 | ) | | $ | 1,055 |
| | $ | (21,465 | ) |
The changes in accumulated other comprehensive income (loss), excluding non-controlling interest, for 2010, 2011, and 2012 is as follows: | | | | | | | | | | | | | | | | | | Foreign Currency Translation | | Pension/ Postretirement Plan Adjustment | | Hedging Activities | | Accumulated Other Comprehensive Income | Balance January 1, 2010 | $ | 110,362 |
| | $ | (55,148 | ) | | $ | 208 |
| | $ | 55,422 |
| Other comprehensive income in 2010 | (7,036 | ) | | (16,726 | ) | | (860 | ) | | (24,622 | ) | Balance December 31, 2010 | $ | 103,326 |
| | $ | (71,874 | ) | | $ | (652 | ) | | $ | 30,800 |
| Other comprehensive income in 2011 | (20,371 | ) | | (1,187 | ) | | (2,069 | ) | | (23,627 | ) | Balance December 31, 2011 | $ | 82,955 |
| | $ | (73,061 | ) | | $ | (2,721 | ) | | $ | 7,173 |
| Other comprehensive income in 2012 | 6,438 |
| | (8,979 | ) | | 3,699 |
| | 1,158 |
| Balance December 31, 2012 | $ | 89,393 |
| | $ | (82,040 | ) | | $ | 978 |
| | $ | 8,331 |
|
|