XML 30 R52.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Fair Value Measurements (Narrative) (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
Intangible asset impairment charge | $ 14,800 | $ (14,830) | $ 14,830 | $ 14,800
Precentage of control premium for valuing assets |  |  |  | 15.00%
Minimum |  |  |  |
Percentage of weighted average cost of capital rates after tax |  |  |  | 10.00%
Maximum |  |  |  |
Percentage of weighted average cost of capital rates after tax |  |  |  | 20.00%

X
- Definition Weighted Average Cost Of Capital Rate + References No definition available. + Details
Name: | psdv_WeightedAverageCostOfCapitalRate
Namespace Prefix: | psdv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage above current market value that an investor seeking to acquire control of a company will pay, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsControlPremium
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16373-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 46 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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
Name: | us-gaap_ImpairmentOfIntangibleAssetsFinitelived
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration