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Consolidated Statements of Cash Flows (unaudited) (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Supplemental disclosures of non-cash transactions:
Patent costs accrued from Auxilium	$ 151,000	$ 10,000
Patent amortization expenses	$ 45,000	$ 16,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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