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BUSINESS SEGMENT INFORMATION (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
BUSINESS SEGMENT INFORMATION [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of industry in which entity operates |  |  |  |  |  |  |  |  |  |  | 1 | 1 | 1
Number of reportable operating segments |  |  |  |  |  |  |  |  |  |  | 3 | 3 | 3
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales to External Customers |  |  |  |  |  |  |  |  |  |  | $ 286,594,000 | $ 295,121,000 | $ 302,539,000
Net Sales | 71,752,000 | [1] | 76,059,000 | 73,222,000 | 65,561,000 | 68,642,000 | 75,903,000 | 79,173,000 | [2] | 71,403,000 | 286,594,000 | 295,121,000 | 302,539,000
Income (loss) from operations |  |  |  |  |  |  |  |  |  |  | 1,705,000 | 7,396,000 | 15,160,000
Total assets | 275,218,000 |  |  |  |  | 276,911,000 |  |  |  |  | 275,218,000 | 276,911,000 | 277,172,000
Capital Expenditures |  |  |  |  |  |  |  |  |  |  | 4,744,000 | 2,928,000 | 2,427,000
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  |  |  | 9,072,000 | 8,667,000 | 8,836,000
Restructuring charges | 3,100,000 |  |  |  |  |  |  |  |  |  | 5,245,000 | 314,000 | 0
Litigation charges |  |  |  |  |  |  |  |  |  |  | (26,000) | (3,471,000) | (8,103,000)
Loss on disposal of assets |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |
Pre-tax gain on sale of property |  |  |  |  |  |  |  |  |  |  | (183,000) | 93,000 | 352,000
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales | 71,752,000 | [1] | 76,059,000 | 73,222,000 | 65,561,000 | 68,642,000 | 75,903,000 | 79,173,000 | [2] | 71,403,000 | 286,594,000 | 295,121,000 | 302,539,000
Long-lived Assets by Geographic Location [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Lived Assets | 47,498,000 |  |  |  |  | 51,368,000 |  |  |  |  | 47,498,000 | 51,368,000 |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of customers representing sales in excess of ten percent |  |  |  |  |  |  |  |  |  |  | 2 | 2 | 2
Two Customers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from major customers |  |  |  |  |  |  |  |  |  |  | 70,600,000 | 65,700,000 | 74,600,000
Revenue from major customers, percentage (in hundredths) |  |  |  |  |  |  |  |  |  |  | 24.60% | 22.30% | 24.70%
Interconnect [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 109,245,000 | 107,346,000 | 101,059,000
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 109,245,000 | 107,346,000 | 101,059,000
Magnetics [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 100,529,000 | 87,104,000 | 127,664,000
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 100,529,000 | 87,104,000 | 127,664,000
Modules [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 66,663,000 | 90,475,000 | 61,092,000
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 66,663,000 | 90,475,000 | 61,092,000
Circuit protection [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 10,157,000 | 10,196,000 | 12,724,000
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 10,157,000 | 10,196,000 | 12,724,000
North America [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales to External Customers |  |  |  |  |  |  |  |  |  |  | 126,469,000 | 134,804,000 | 111,888,000
Net Sales |  |  |  |  |  |  |  |  |  |  | 138,966,000 | 149,114,000 | 125,383,000
Income (loss) from operations |  |  |  |  |  |  |  |  |  |  | 1,336,000 | 9,026,000 | 4,181,000
Total assets | 84,609,000 |  |  |  |  | 115,552,000 |  |  |  |  | 84,609,000 | 115,552,000 | 110,984,000
Capital Expenditures |  |  |  |  |  |  |  |  |  |  | 2,455,000 | 1,121,000 | 870,000
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  |  |  | 4,081,000 | 4,046,000 | 3,862,000
Restructuring charges |  |  |  |  |  |  |  |  |  |  | 4,500,000 |  |
Loss on disposal of assets |  |  |  |  |  |  |  |  |  |  | (300,000) |  |
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 138,966,000 | 149,114,000 | 125,383,000
Asia [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales to External Customers |  |  |  |  |  |  |  |  |  |  | 128,319,000 | 126,941,000 | 156,635,000
Net Sales |  |  |  |  |  |  |  |  |  |  | 167,756,000 | 177,815,000 | 196,243,000
Income (loss) from operations |  |  |  |  |  |  |  |  |  |  | (42,000) | (3,480,000) | 9,357,000
Total assets | 148,351,000 |  |  |  |  | 148,950,000 |  |  |  |  | 148,351,000 | 148,950,000 | 155,414,000
Capital Expenditures |  |  |  |  |  |  |  |  |  |  | 2,003,000 | 1,733,000 | 1,371,000
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  |  |  | 4,076,000 | 4,137,000 | 4,513,000
Restructuring charges |  |  |  |  |  |  |  |  |  |  | 600,000 |  |
Litigation charges |  |  |  |  |  |  |  |  |  |  |  | 3,500,000 | 8,100,000
Pre-tax gain on sale of property |  |  |  |  |  |  |  |  |  |  | 200,000 |  |
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 167,756,000 | 177,815,000 | 196,243,000
Long-lived Assets by Geographic Location [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of identifiable assets (in hundredths) | 43.00% |  |  |  |  |  |  |  |  |  | 43.00% |  |
Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales to External Customers |  |  |  |  |  |  |  |  |  |  | 31,806,000 | 33,376,000 | 34,016,000
Net Sales |  |  |  |  |  |  |  |  |  |  | 33,329,000 | 34,597,000 | 35,150,000
Income (loss) from operations |  |  |  |  |  |  |  |  |  |  | 411,000 | 1,850,000 | 1,622,000
Total assets | 42,258,000 |  |  |  |  | 12,409,000 |  |  |  |  | 42,258,000 | 12,409,000 | 10,774,000
Capital Expenditures |  |  |  |  |  |  |  |  |  |  | 286,000 | 74,000 | 186,000
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  |  |  | 915,000 | 484,000 | 461,000
Restructuring charges |  |  |  |  |  |  |  |  |  |  | 100,000 |  |
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 33,329,000 | 34,597,000 | 35,150,000
Intergeographic revenues [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | (53,457,000) | (66,405,000) | (54,237,000)
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | (53,457,000) | (66,405,000) | (54,237,000)
United States [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 126,469,000 | 134,804,000 | 111,888,000
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 126,469,000 | 134,804,000 | 111,888,000
Long-lived Assets by Geographic Location [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Lived Assets | 27,552,000 |  |  |  |  | 30,204,000 |  |  |  |  | 27,552,000 | 30,204,000 |
Macao [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 128,319,000 | 126,941,000 | 156,635,000
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 128,319,000 | 126,941,000 | 156,635,000
Germany [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 14,165,000 | 17,937,000 | 20,027,000
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 14,165,000 | 17,937,000 | 20,027,000
United Kingdom [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 13,203,000 | 11,927,000 | 10,747,000
Restructuring charges |  |  |  |  |  |  |  |  |  |  |  | 300,000 |
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 13,203,000 | 11,927,000 | 10,747,000
Italy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 1,083,000 | 0 | 0
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 1,083,000 | 0 | 0
Sweden [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 57,000 | 0 | 0
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 57,000 | 0 | 0
Czech Republic [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of key financial data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  |  |  | 3,298,000 | 3,512,000 | 3,242,000
Net Sales To External Customers By Geographic Area And Major Product Line [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated net sales |  |  |  |  |  |  |  |  |  |  | 3,298,000 | 3,512,000 | 3,242,000
People's Republic of China (PRC) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived Assets by Geographic Location [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Lived Assets | 16,622,000 |  |  |  |  | 18,611,000 |  |  |  |  | 16,622,000 | 18,611,000 |
All other foreign countries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived Assets by Geographic Location [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Lived Assets | $ 3,324,000 |  |  |  |  | $ 2,553,000 |  |  |  |  | $ 3,324,000 | $ 2,553,000 |
[1] | The net loss for the quarter ended December 31, 2012 includes $3.1 million of restructuring charges primarily related to severance charges and the writedown of assets associated with the closure of the Company's Vinita, Oklahoma manufacturing facility.
[2] | The net loss for the quarter ended June 30, 2011 includes $2.8 million of net litigation charges related to the SynQor and Halo lawsuits ($2.6 million after tax).

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