XML 115 R38.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Investment in Marketable Securities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2012
Investment in Marketable Securities [Abstract] |
Summary of marketable securities | The following table summarizes marketable securities as of December 31, 2011 (in thousands):
|  | Basis |  |  | Gross Unrealized Gain/(Loss) |  |  | Gross Realized Gain/(Loss) |  |  | Fair Value At Quoted Prices in Active Markets (Level 1) |
Marketable securities |  | $ | 64 |  |  | $ | 1,685 |  |  | $ | — |  |  | $ | 1,749 |

X
- Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration