(12) Litigation (Details Narrative) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accrued expenses	$ 17,609,766
Reduction of investigation, litigation and settlement related costs	(326,408)	10,257,388	1,616,241
Internal and Government Investigations
Settlement with United States Attorney's Office amount paid	4,100,000
Settlement with United States Attorney's Office amount accrued	5,800,000
Settlement with United States Attorney's Office amount accrued, payable in December 2013	1,700,000
Costs associated with possible resolution of the Derivative Action	100,000
Deferred Prosecution Agreement (DPA)	The Company entered into a Deferred Prosecution Agreement (DPA) with the USAO. Under the DPA, the USAO agrees that it will defer prosecution of the Company in connection with the matter, and ultimately not prosecute the Company if the Company satisfies its obligations during the 18 month term of the DPA.
Stockholder Litigation
Company’s Directors and Officers (“D&O”) Insurance Agreement	Company entered into an agreement with the carrier of the first $5.0 million layer of the Company’s D&O insurance. Pursuant to this agreement, the Company accepted a payment of $3.8 million from the first layer insurance carrier in satisfaction of the carrier’s obligations to the Company under the first layer D&O insurance policy. If the combined costs of (i) defense of the Class Action and the Derivative Action, and (ii) either settlements of the Class Action and/or Derivative Action, or damages to be paid after judgment in the two actions, exceed $3.8 million, the Company will be responsible to pay the next $1.2 million of costs, settlement amounts or liability up to $5.0 million, before the next layer of the Company’s D&O insurance might cover the Company. This potential up to $1.2 million payment could have a significant negative impact on the Company’s financial results, its cash flow and its cash reserves. In addition, as part of the October 2012 agreement with the carrier, the Company agreed to indemnify the carrier of the first layer of D&O insurance against potential claims by certain named insured persons under the first layer D&O insurance policy. The Company cannot predict the likelihood or the outcome of any such claims by the named insureds.
Accrual for certain costs associated with resolution of class action and derivative action	6,400,000
Accrued liability for costs associated with the Class Action and the Derivative Actions	5,400,000
Amount reimbursed by the Company’s insurance carrier	3,900,000
Receivables due from insurance reimbursement included in prepaid expenses and other current assets	1,000,000	0
Reduction of investigation, litigation and settlement related costs	(300,000)
Legal fees	$ 1,300,000