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INCOME TAXES (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Income Taxes [Line Items] |  |  |  |
Liability for uncertain tax position that would impact effective tax rate |  | $ 2,700,000 | $ 4,100,000 |
Liabilities for uncertain tax positions included in income tax payable |  | 600,000 | 0 |
Liability for uncertain tax positions |  | 2,100,000 | 4,100,000 |
Years tax audit notified by IRS |  | December 31, 2004 through 2009 |  |
IRS audit settlement |  | 100,000 |  |
Prior year liability uncertain tax positions relating to 2007 |  | 600,000 |  |
Increase in the liability for uncertain tax positions |  | 1,221,000 | 297,000 | 948,000
Reconciliation of beginning and ending amount of liability for uncertain tax positions [Roll Forward] |  |  |  |
Liability for uncertain tax positions - January 1 | 2,711,000 | 4,132,000 | 3,835,000 | 4,722,000
Additions based on tax positions related to the current year |  | 1,221,000 | 297,000 | 948,000
Expiration of statutes of limitations |  | (2,642,000) | 0 | (1,835,000)
Liability for uncertain tax positions - December 31 |  | 2,711,000 | 4,132,000 | 3,835,000
Interest and penalties uncertain tax positions recognized |  | (500,000) | 200,000 | 200,000
Accrued interest and penalties uncertain tax positions |  | 200,000 | 700,000 |
Earnings (loss) before provision (benefit) for income taxes included earnings from domestic operations |  | 400,000 | 9,600,000 | 3,600,000
Earnings (loss) from foreign operations |  | 600,000 | (1,700,000) | 12,000,000
Current [Abstract] |  |  |  |
Federal |  | (459,000) | 2,585,000 | 221,000
Foreign |  | 241,000 | 478,000 | 803,000
State |  | 76,000 | 362,000 | 182,000
Total |  | (142,000) | 3,425,000 | 1,206,000
Deferred [Abstract] |  |  |  |
Federal |  | (807,000) | 599,000 | (133,000)
State |  | (58,000) | 102,000 | 189,000
Foreign |  | (357,000) | (18,000) | 669,000
Total |  | (1,222,000) | 683,000 | 725,000
Tax provision (benefit) computed at the Company's effective tax rate |  | (1,364,000) | 4,108,000 | 1,931,000
Reconciliation of taxes on income computed at the federal statutory rate [Abstract] |  |  |  |
Tax provision (benefit) computed at the federal statutory |  | 353,000 | 2,676,000 | 5,297,000
Increase (decrease) in taxes resulting from [Abstract] |  |  |  |
Different tax rates and permanent differences applicable to foreign operations |  | (306,000) | 1,526,000 | (2,377,000)
Increase in (reversal of) liability for uncertain tax positions - net |  | (1,421,000) | 297,000 | (887,000)
Utilization of research and development and foreign tax credits |  | 0 | (762,000) | (549,000)
State taxes, net of federal benefit |  | 0 | 341,000 | 309,000
Current year valuation allowance - U.S. segment |  | 298,000 | 0 | 0
Permanent differences applicable to U.S. operations including qualified production activity credits, SERP/COLI income, unrealized exchange gains and amortization of purchase accounting intangibles |  | (260,000) | 44,000 | (73,000)
Other |  | (28,000) | (14,000) | 211,000
Tax provision (benefit) computed at the Company's effective tax rate |  | (1,364,000) | 4,108,000 | 1,931,000
Increase (decrease) in effective tax rate resulting from [Abstract] |  |  |  |
Tax provision (benefit) computed at the federal statutory rate (in hundredths) |  | 34.00% | 34.00% | 34.00%
Different tax rates and permanent differences applicable to foreign operations (in hundredths) |  | (29.00%) | 19.00% | (15.00%)
Increase in (reversal of) liability for uncertain tax positions - net (in hundredths) |  | (137.00%) | 4.00% | (6.00%)
Utilization of research and development and foreign tax credits (in hundredths) |  | 0.00% | (10.00%) | (4.00%)
State taxes, net of federal benefit (in hundredths) |  | 0.00% | 4.00% | 2.00%
Current year valuation allowance - U.S. segment (in hundredths) |  | 29.00% | 0.00% | 0.00%
Permanent differences applicable to U.S. operations including qualified production activity credits, SERP/COLI income, unrealized exchange gains and amortization of purchase accounting intangibles (in hundredths) |  | (25.00%) | 1.00% | 0.00%
Other (in hundredths) |  | (3.00%) | 0.00% | 1.00%
Tax provision (benefit) computed at the Company's effective tax rate (in hundredths) |  | (131.00%) | 52.00% | 12.00%
Tax credit carryforward, valuation allowance |  | 700,000 |  |
Liability for uncertain tax positions |  | 2,161,000 | 4,132,000 |
Unrepatriated foreign earnings |  | 93,700,000 |  |
Estimated federal income tax liability related to unrepatriated foreign earnings |  | 20,900,000 |  |
Repatriated earnings |  |  | 500,000 |
Decrease in the income tax benefit |  | 400,000 |  |
Amount of R&E tax credit | 400,000 |  |  |
Deferred Tax Assets - current [Abstract] |  |  |  |
State tax credits |  | 845,000 | 766,000 |
Reserves and accruals |  | 1,334,000 | 1,195,000 |
Valuation allowance |  | (745,000) | (666,000) |
Deferred income tax assets - current |  | 1,434,000 | 1,295,000 |
Deferred Tax Assets - noncurrent [Abstract] |  |  |  |
Unfunded pension liability |  | 1,150,000 | 941,000 |
Depreciation |  | (426,000) | (369,000) |
Amortization |  | (2,063,000) | 243,000 |
Federal, state and foreign net operating loss and credit carryforwards |  | 1,114,000 | 566,000 |
Restructuring expenses |  | 319,000 | 0 |
Other accruals |  | 2,438,000 | 1,999,000 |
Valuation allowances |  | (1,129,000) | (566,000) |
Deferred income tax assets - noncurrent |  | 1,403,000 | 2,814,000 |
Macao corporate profit tax rate (in hundredths) |  | 12.00% |  |
Fibreco and Gigacom [Member] |  |  |  |
Increase (decrease) in effective tax rate resulting from [Abstract] |  |  |  |
Liability for uncertain tax positions |  | 2,300,000 |  |
Fibreco [Member] |  |  |  |
Increase (decrease) in effective tax rate resulting from [Abstract] |  |  |  |
Deferred tax liability |  | 100,000 |  |
Deferred tax liabilities at the date of acquisition |  | 1,700,000 |  |
GigaCom [Member] |  |  |  |
Increase (decrease) in effective tax rate resulting from [Abstract] |  |  |  |
Deferred tax liabilities at the date of acquisition |  | 600,000 |  |
Germany [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax audit, years under examination |  | 2008 through 2010 |  |
U.S. Federal [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Years not subject to examination by tax authorities |  | before 2010 |  |
State Jurisdiction [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Years not subject to examination by tax authorities |  | before 2007 |  |
Increase (decrease) in effective tax rate resulting from [Abstract] |  |  |  |
Operating loss carryforwards |  | 1,700,000 |  |
Operating loss carryforwards, valuation allowance |  | 200,000 |  |
Capital loss carryforwards |  | 2,700,000 |  |
Capital loss carryforward, valuation allowance |  | 400,000 |  |
Tax credit carryforward |  | 1,200,000 |  |
Foreign Jurisdictions [Member] |  |  |  |
Increase (decrease) in effective tax rate resulting from [Abstract] |  |  |  |
Operating loss carryforwards |  | 3,400,000 |  |
Operating loss carryforwards, valuation allowance |  | 500,000 |  |
Capital loss carryforwards |  | 200,000 |  |
Capital loss carryforward, valuation allowance |  | $ 100,000 |  |
Foreign Jurisdictions [Member] | Asia [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Years not subject to examination by tax authorities |  | before 2004 |  |
Foreign Jurisdictions [Member] | Europe [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Years not subject to examination by tax authorities |  | before 2006 |  |

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- Definition The portion of the deferred tax asset arising from some other tax carryforward for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Reflects the effects of adjustments of previously recorded tax expense, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, IRS tax settlement and unusual repatriation of foreign earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 10A, 10B, 10C -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 10 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Carryforwards -URI http://asc.fasb.org/extlink&oid=6506874 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The portion of the deferred tax asset arising from a tax credit carryforward for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Valuation Allowance -URI http://asc.fasb.org/extlink&oid=6528051 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the United States that are not subject to U.S. federal income taxes. + References No definition available. + Details
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- Definition The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 15, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 15, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(4) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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