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Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Sep. 30, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Intercompany sales |  |  |  |  |  |  |  |  |  | $ 5,649 | $ 10,549 | $ 8,877
Net sales |  |  |  |  |  |  |  |  |  | 162,288 | 137,112 | 112,536
Segment net income (loss) | (365) | 1,386 | 1,549 | 1,963 | 2,757 | 1,745 | 453 | (1,375) | 4,533 | 4,533 | 3,580 | 860
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 5,994 | 4,610 | 4,374
Total assets | 183,849 |  |  |  | 137,568 |  |  |  |  | 183,849 | 137,568 | 128,556
Subtotal [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 167,937 | 147,661 | 121,413
Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Intercompany sales |  |  |  |  |  |  |  |  |  | (5,649) | (10,549) | (8,877)
Mobile communication [Member] | United States [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 79,828 | 62,857 | 50,797
Mobile communication [Member] | Canada [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 501 | 777 | 875
Mobile communication [Member] | Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 19,026 | 15,672 | 13,682
Mobile communication [Member] | Other geographic areas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 8,796 | 8,379 | 4,848
Guidance and stabilization [Member] | United States [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 7,892 | 8,632 | 11,951
Guidance and stabilization [Member] | Canada [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 13,810 | 10,736 | 16,643
Guidance and stabilization [Member] | Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 7,421 | 11,793 | 7,877
Guidance and stabilization [Member] | Other geographic areas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 25,014 | 18,266 | 5,863
Americas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Intercompany sales |  |  |  |  |  |  |  |  |  | 3,465 | 8,485 | 7,793
Net sales |  |  |  |  |  |  |  |  |  | 137,379 | 117,414 | 95,724
Segment net income (loss) |  |  |  |  |  |  |  |  |  | 5,260 | 4,316 | 396
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 4,521 | 4,116 | 3,948
Total assets | 136,051 |  |  |  | 118,076 |  |  |  |  | 136,051 | 118,076 | 112,557
Americas [Member] | Subtotal [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 140,844 | 125,899 | 103,517
Americas [Member] | Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Intercompany sales |  |  |  |  |  |  |  |  |  | (3,465) | (8,485) | (7,793)
Americas [Member] | Mobile communication [Member] | United States [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 78,729 | 62,857 | 50,797
Americas [Member] | Mobile communication [Member] | Canada [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 462 | 777 | 875
Americas [Member] | Mobile communication [Member] | Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 455 | 417 | 438
Americas [Member] | Mobile communication [Member] | Other geographic areas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 3,596 | 3,936 | 1,280
Americas [Member] | Guidance and stabilization [Member] | United States [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 7,892 | 8,632 | 11,951
Americas [Member] | Guidance and stabilization [Member] | Canada [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 13,810 | 10,736 | 16,643
Americas [Member] | Guidance and stabilization [Member] | Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 7,421 | 11,793 | 7,877
Americas [Member] | Guidance and stabilization [Member] | Other geographic areas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 25,014 | 18,266 | 5,863
Europe and Asia [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Intercompany sales |  |  |  |  |  |  |  |  |  | 2,184 | 2,064 | 1,084
Net sales |  |  |  |  |  |  |  |  |  | 24,909 | 19,698 | 16,812
Segment net income (loss) |  |  |  |  |  |  |  |  |  | (727) | (736) | 464
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 1,473 | 494 | 426
Total assets | 47,798 |  |  |  | 19,492 |  |  |  |  | 47,798 | 19,492 | 15,999
Europe and Asia [Member] | Subtotal [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 27,093 | 21,762 | 17,896
Europe and Asia [Member] | Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Intercompany sales |  |  |  |  |  |  |  |  |  | (2,184) | (2,064) | (1,084)
Europe and Asia [Member] | Mobile communication [Member] | United States [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 1,099 | 0 | 0
Europe and Asia [Member] | Mobile communication [Member] | Canada [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 39 | 0 | 0
Europe and Asia [Member] | Mobile communication [Member] | Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 18,571 | 15,255 | 13,244
Europe and Asia [Member] | Mobile communication [Member] | Other geographic areas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 5,200 | 4,443 | 3,568
Europe and Asia [Member] | Guidance and stabilization [Member] | United States [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Europe and Asia [Member] | Guidance and stabilization [Member] | Canada [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Europe and Asia [Member] | Guidance and stabilization [Member] | Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Europe and Asia [Member] | Guidance and stabilization [Member] | Other geographic areas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Subtotal |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0

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