Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Summary Of Components Of Income Before Income Taxes And The Provision For Income Taxes

	Year ended December 31,
(in thousands)	2011			2010			2009
Income (loss) before income taxes:
Domestic	$	252,381		$	210,819		$	37,020
Foreign		(44,374	)		(9,933	)		(7,068	)
Income before income taxes	$	208,007		$	200,886		$	29,952
Income tax expense (benefit):
Current:
Federal	$	79,850		$	45,727		$	7,614
State and local		6,601			9,684			4,018
Foreign		337			(33	)		16
Subtotal		86,788			55,378			11,648
Deferred:
Federal		1,318			26,926			21,588
State and local		(8,136	)		(4,198	)		10,684
Foreign		(12,622	)		(2,828	)		(2,891	)
Subtotal		(19,440	)		19,900			29,381
Income tax expense	$	67,348		$	75,278		$	41,029
Effective income tax rate		32.4	%		37.5	%		137.0	%

Schedule Of Reconciliation Of Federal Statutory Income Tax Rate To The Effective Income Tax Rate

	Year ended December 31,
(% of pre-tax income)	2011			2010			2009
U.S. federal statutory income tax rate		35.0	%		35.0	%		35.0	%
State and local income tax, net of federal tax benefit		1.7			1.8			44.3
Share-based compensation		0.3			0.6			5.0
Orphan drug credit		(0.2	)		(0.2	)		(20.5	)
Change in valuation allowance		(2.2	)		0.1			(1.6	)
Impairments		—			—			75.8
Manufacturing deduction		(4.1	)		—			—
Foreign rate differential		1.0			—			—
Other		0.9			0.2			(1.0	)
Effective income tax rate		32.4	%		37.5	%		137.0	%

Summary Of Components Of Deferred Income Tax Assets And Liabilities

	December 31,
(in thousands)	2011			2010
Deferred tax assets:
Net operating loss carryforwards	$	17,893		$	13,421
Capitalized research and development costs		6,503			6,419
Orphan drug credit carryforward		—			1,482
Research and development credit carryforward		—			3,449
Non-deductible reserves		6,118			5,385
Depreciation		273			670
Intangible asset amortization		11,179			6,965
Equity compensation		10,783			9,770
Other		1,267			1,316
Subtotal		54,016			48,877
Valuation allowance		(4,876	)		(6,238	)
Deferred tax assets		49,140			42,639
Deferred tax liabilities:
Intangible asset amortization		198,334			192,963
Convertible note		6,335			6,584
Prepaid expenses		1,388			1,207
Deferred tax liabilities		206,057			200,754
Net deferred tax assets (liability)	$	(156,917	)	$	(158,115	)

Schedule Of Deferred Tax Assets And Liabilities Classification

	December 31,
(in thousands)	2011			2010
Current assets	$	10,055		$	13,744
Non-current assets		11,786			4,252
Current liabilities		(52	)		—
Non-current liabilities		(178,706	)		(176,111	)
Net deferred tax liability	$	(156,917	)	$	(158,115	)

Summary Of Changes In Valuation Allowance

	Year ended December 31,
(in thousands)	2011			2010		2009
Valuation allowance at beginning of year	$	6,238		$	5,949	$	6,436
Tax expense (benefit)		(4,662	)		289		(487	)
Acquisitions		3,435			—		—
Foreign exchange		(135	)		—		—
Valuation allowance at end of year	$	4,876		$	6,238	$	5,949

Summary Of Carryforwards Of Net Operating Losses And Tax Credits

(in thousands)	Amount		Expiration
Foreign net operating losses	$	29,390		Indefinite
State net operating losses		123,381		2020-2028