| Segment Information (Schedule Of Segment Information) (Details) (USD $) | 3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
| Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014
 GeographicSegments | Jun. 30, 2013 | |
| Segment Reporting Information [Line Items] | ||||
| Number of operating segments | 4 | |||
| Net sales to unrelated entities | $ 324,246,000 | $ 280,495,000 | $ 748,330,000 | $ 628,802,000 | 
| Income (loss) from operations | (16,989,000) | (9,997,000) | 18,462,000 | 2,731,000 | 
| Interest income, net | 384,000 | 215,000 | 623,000 | 347,000 | 
| Interest expense on note payable to related party | (277,000) | 0 | (487,000) | 0 | 
| Other non-operating expense | (149,000) | (473,000) | (505,000) | (1,103,000) | 
| Income (loss) before income tax | (17,031,000) | (10,255,000) | 18,093,000 | 1,975,000 | 
| United States [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales to unrelated entities | 146,368,000 | 139,789,000 | 387,557,000 | 340,287,000 | 
| Income (loss) from operations | 2,365,000 | 5,415,000 | 46,536,000 | 30,962,000 | 
| LAAP [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales to unrelated entities | 96,100,000 | 81,283,000 | 212,913,000 | 164,329,000 | 
| Income (loss) from operations | 9,253,000 | 10,558,000 | 26,487,000 | 21,914,000 | 
| EMEA [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales to unrelated entities | 72,949,000 | 53,034,000 | 112,089,000 | 93,954,000 | 
| Income (loss) from operations | 5,797,000 | (1,558,000) | 2,271,000 | (7,131,000) | 
| Canada [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales to unrelated entities | 8,829,000 | 6,389,000 | 35,771,000 | 30,232,000 | 
| Income (loss) from operations | (3,784,000) | (4,050,000) | (385,000) | (547,000) | 
| Operating Segments [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Income (loss) from operations | 13,631,000 | 10,365,000 | 74,909,000 | 45,198,000 | 
| Corporate, Non-Segment [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Unallocated corporate expenses | $ (30,620,000) | $ (20,362,000) | $ (56,447,000) | $ (42,467,000) |