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Accounts Payable And Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accounts Payable And Accrued Liabilities [Abstract]
Accounts payable	$ 4,115	$ 2,360
Accrued compensation	3,222	5,015
Accrued rebates and sales discounts	3,834	4,250
Allowance for product returns	9,548	10,831
Accrued contract sales organization fees	500	420
Accruals for Inventory	1,216	2,990
Other accrued liabilities	5,491	6,712
Accounts Payable and Accrued Liabilities, Current, Total	$ 27,926	$ 32,578

Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References+ Details