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Stockholders' Equity - Additional information (Detail) (USD $) | 0 Months Ended | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Apr. 22, 2013 | Mar. 07, 2013 | Aug. 31, 2011 | Nov. 30, 2000 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Jul. 22, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares accepted | 1,341,575 | 1,931,513 |  |  | 0 | 0 | 0 |
Aggregate consideration for Common Stock | $ 6,708,000 | $ 10,392,000 |  |  |  |  |  |
Tender offer expiration date |  |  |  |  | Apr. 22, 2013 |  |  |
Common Stock repurchased as per November plan |  |  |  | 30,000,000 |  |  |  |
Stock repurchase program amount available |  |  |  |  | 8,541,000 | 8,541,000 |  |
Cash dividend, Per share |  |  |  |  |  |  |  | $ 0.15
Total dividend paid to shareholder |  |  | 6,272,000 |  |  |  |  |
Cash dividends paid to the Company |  |  |  |  | 1,569,000 | 1,222,000 | 1,310,000 |
Cash dividends paid to outside shareholders |  |  |  |  | 531,000 | 378,000 | 690,000 |
Common Stock were issued upon the exercise of stock options |  |  |  |  | 2,430 |  |  |
Class B Common Stock [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Common Stock converted |  |  |  |  | 8,760 |  |  |
Subsidiaries [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Cash dividends on subsidiary common stock |  |  |  |  | $ 2,100,000 | $ 1,600,000 | $ 2,000,000 |
Vicor Stock Options [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vicor Common Stock reserved for issuance |  |  |  |  | 14,846,930 |  |  |

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- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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