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Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Foreign currency translation |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ (491) |  | $ (682) |  | $ 18 |  | $ (419) |  |
Other comprehensive loss: |  |  |  |  |  |  |  |  |
Foreign currency translation adjustments | 151 | [1] | 540 | [1] | (358) | [1] | 277 | [1] |
Balance at end of period | (340) |  | (142) |  | (340) |  | (142) |  |
Available-for-sale marketable securities |  |  |  |  |  |  |  |  |
Balance at beginning of period | 47 |  | 27 |  | 19 |  | 27 |  |
Other comprehensive income: |  |  |  |  |  |  |  |  |
Net unrealized holding gain (loss) | (22) | [2] | (20) | [2] | 24 | [2] | (20) | [2] |
Deferred income taxes | 9 | [2] | 8 | [2] | (9) | [2] | 8 | [2] |
Total other comprehensive income | (13) |  | (12) |  | 15 |  | (12) |  |
Balance at end of period | 34 |  | 15 |  | 34 |  | 15 |  |
Total accumulated other comprehensive loss | $ (306) |  | $ (127) |  | $ (306) |  | $ (127) |  | $ 37
[1] | In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.
[2] | In all periods presented, there were no realized holding gains or losses and therefore no amounts were reclassified to earnings.

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- Definition Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32022-110900 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 + Details
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