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Intangible Assets (Reconciliation of Intangible Assets) (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2011 | Dec. 31, 2011 | Jun. 30, 2012 | Dec. 31, 2011 | Jun. 30, 2011 | Jun. 30, 2010
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Asset impairment write-down | $ (14,800) | $ 14,830 | $ (14,830) | $ (14,800) |  |
Amortization expense |  |  | (2,037) |  | (3,302) | (3,289)
Net book value at end of year | 4,596 | 4,596 | 4,226 | 4,596 | 21,564 |
Patented technologies |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Patented technologies Gross carrying amount at beginning of year |  | 55,422 | 55,422 |  | 53,275 |
Asset impairment write-down |  |  | (14,830) |  |  |
Foreign currency translation adjustments |  |  | (1,036) |  | 2,147 |
Gross carrying amount at end of year |  |  | 39,556 |  | 55,422 |
Accumulated amortization at beginning of year |  | (33,858) | (33,858) |  | (29,398) |
Amortization expense |  |  | (2,037) |  | (3,302) |
Foreign currency translation adjustments |  |  | 565 |  | (1,158) |
Accumulated amortization at end of year |  |  | (35,330) |  | (33,858) |
Net book value at end of year |  |  | $ 4,226 |  | $ 21,564 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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