CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income (loss)	$ 1,226,472	$ (2,030,687)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	824,409	400,281
Stock-based compensation expense	240,873	255,031
Provision for bad debts	8,036
Gain on bargain purchase	(314,244)
Loss on revaluation of contingent consideration	24,629
Loss on disposal of assets		5,597
Changes in assets and liabilities:
Accounts receivable	(1,362,078)	(88,428)
Royalties receivable	126,252	233,998
Inventories	(54,782)	(16,406)
Prepaid expenses and other current assets	(293,908)	1,694,651
Accounts payable	276,225	231,420
Accrued liabilities	960,971	791,461
Long-term liabilities	70,967	(32,838)
Net cash provided by operating activities	1,733,822	1,444,080
Cash flows from investing activities:
Purchases of marketable securities	(14,612,493)	(26,234,591)
Redemptions of marketable securities	14,383,333	29,425,417
Purchases of property, plant and equipment	(156,742)	(206,684)
Net cash (used in) provided by investing activities	(385,902)	2,984,142
Cash flows from financing activities:
Exercise of stock options	113,540	69,214
Repurchase of common stock		(88,401)
Net cash provided by (used in) financing activities	113,540	(19,187)
Effect of exchange rate changes on cash and cash equivalents	163,694
Net increase in cash and cash equivalents	1,625,154	4,409,035
Cash and cash equivalents, beginning of period	11,167,745	9,794,509
Cash and cash equivalents, end of period	$ 12,792,899	$ 14,203,544

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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).