Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes

Components of income taxes

	Federal			State			Foreign			Total
2011:
Current	$	63,758		$	12,226		$	7,487		$	83,471
Deferred		1,003			(1,067	)		(3	)		(67	)
	$	64,761		$	11,159		$	7,484		$	83,404
2010:
Current	$	71,032		$	16,764		$	3,648		$	91,444
Deferred		(2,182	)		377			93			(1,712	)
	$	68,850		$	17,141		$	3,741		$	89,732
2009:
Current	$	48,523		$	10,350		$	2,123		$	60,996
Deferred		4,752			587			(31	)		5,308
	$	53,275		$	10,937		$	2,092		$	66,304

Actual income taxes differed from that obtained by applying the statutory federal income tax rate to income before income taxes

	Years Ended December 31
	2011			2010			2009
Computed "expected" income taxes	$	99,842		$	87,517		$	64,105
State income taxes, net of federal income tax benefit		6,912			10,566			7,600
Foreign rate differential		(24,783	)		(11,304	)		(7,878	)
Other		1,433			2,953			2,477
	$	83,404		$	89,732		$	66,304

Tax effects of temporary differences that give rise to significant portions of deferred tax assets and deferred tax liabilities

	2011			2010
Deferred tax assets (liabilities), current:
Uniform capitalization adjustment to inventory	$	5,271		$	3,127
Bad debt and other reserves		8,874			7,365
State taxes		1,729			4,360
Prepaid expenses		(1,460	)		(2,850	)
Total deferred tax assets, current		14,414			12,002
Deferred tax assets (liabilities), noncurrent:
Amortization and impairment of intangible assets		7,181			6,262
Depreciation of property and equipment		(6,056	)		(3,230	)
Share-based compensation		11,305			11,105
Foreign currency translation		(744	)		(1,062	)
Deferred rent		169			1,245
Acquisition costs		808			—
Other		63			63
Net operating loss carryforwards		497			738
Total deferred tax assets, noncurrent		13,223			15,121
Net deferred tax assets	$	27,637		$	27,123

Reconciliation of the beginning and ending amounts of total unrecognized tax benefits

Balance at December 31, 2009	$	5,011
Gross increase related to current year tax positions		2,235
Settlements		(1,740	)
Balance at December 31, 2010	$	5,506
Gross decrease related to prior years' tax positions		(2,235	)
Balance at December 31, 2011	$	3,271