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Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Supplemental Cash Flow Information
Non-cash increase in construction in progress and financing obligation	$ 1,929
Unrealized loss on available for sale securities, net of tax	(21)	(11)
Non- cash increase in goodwill related to the acquisition of Lev Pharmaceuticals, Inc.		86,165
Cash paid for income taxes	758	24,119
Cash paid for interest	$ 2,404	$ 2,589

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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