Summary Of Significant Accounting Policies (Schedule Of Supplemental Disclosures Of Cash Flow Information) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash paid during the year for:
Interest	$ 22,000	$ 89,000	$ 143,000
Income taxes	1,263,000	3,564,000	2,502,000
Non-cash investing and financing activities
Initial value of derivative issued			620,000
PerClot [Member]
Non-cash investing and financing activities
Issuance of common stock for acquisition of intangible assets			$ 989,000