Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities
Net income	$ 1,939	$ 4,613
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and depreciation	7,429	7,365
Provision for prompt payment discounts	1,998	2,049
Recovery of inventory allowances	(235)	(367)
Impairment of product rights	2,500
Stock-based compensation	884	655
Benefit from (provision for) deferred income taxes	468	(2,431)
Changes in operating assets and liabilities:
Accounts receivable	48,645	323
Inventories	1,366	(1,659)
Prepaid expenses, long-term accounts receivable and other assets	9,009	2,086
Accounts payable	1,358	(1,809)
Accrued expenses and license agreement liability	(7,925)	4,305
Income taxes receivable	(1,212)	954
Deferred revenue	(24,765)	10,822
Net cash provided by operating activities	41,459	26,906
Cash flows from investing activities
Purchase of property and equipment	(333)	(278)
Net cash used in investing activities	(333)	(278)
Cash flows from financing activities
Proceeds from exercise of common stock options and warrants	311	516
Excess tax benefit from stock-based compensation	452	455
Principal payments on capital lease obligation	(41)	(6)
Net cash provided by financing activities	722	965
Net increase in cash and cash equivalents	41,848	27,593
Cash and cash equivalents as of beginning of period	50,945	18,853
Cash and cash equivalents as of end of period	$ 92,793	$ 46,446

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).