XML 31 R56.htm IDEA: XBRL DOCUMENT v2.4.0.6
Commitments, Contingencies and Other (Detail) (July 19, 2011 litigation [Member], USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Loss Contingencies [Line Items]  
Gross fund amount of settlement $ 10,000
Loss Contingency, Estimate of Possible Loss 2,500
Estimated Litigation Liability 2,500
Loss Contingency, Range of Possible Loss, Maximum 6,250
Percent of litigation covered by insurance of initial settlement 45.00%
Insurance Settlements Receivable 5,000
Percent of insurance reovery beyond innitial settlement 30.00%
attorney fees [Member]
  
Loss Contingencies [Line Items]  
Professional Fees 1,250
922130 Legal Counsel and Prosecution [Member]
  
Loss Contingencies [Line Items]  
Professional Fees 140
claim administrator fees [Member]
  
Loss Contingencies [Line Items]  
Professional Fees 459
other settlement cost [Member]
  
Loss Contingencies [Line Items]  
Professional Fees $ 10