Income Taxes (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Effective Income Tax Rate Reconciliation

The following table shows our effective income tax rate for the three months ended March 31, 2013 and March 31, 2012:



	Three months ended March 31
($000)	2013			2012
Income before income taxes and equity in net income of unconsolidated entities	$	41,505		$	31,058
Equity in net income of unconsolidated entities	497			566
Net loss attributable to the noncontrolling interest	43			24
Total	$	42,045		$	31,648
Income tax expense	$	12,427		$	11,511
Effective tax rate	29.6		%	36.4		%

Schedule of Gross Unrecognized Tax Benefits

The table below provides information concerning our gross unrecognized tax benefits as of March 31, 2013 and December 31, 2012. The table also provides the effect these gross unrecognized tax benefits would have on our income tax expense, if they were recognized.



	As of March 31		As of December 31
($000)	2013		2012
Gross unrecognized tax benefits	$	13,746	$	12,699
Gross unrecognized tax benefits that would affect income tax expense	$	13,746	$	12,699
Decrease in income tax expense upon recognition of gross unrecognized tax benefits	$	11,389	$	10,446

Schedule of Liabilities for Unrecognized Tax Benefits

Our Condensed Consolidated Balance Sheets include the following liabilities for unrecognized tax benefits. These amounts include interest and penalties, less any associated tax benefits.



	As of March 31		As of December 31
Liabilities for Unrecognized Tax Benefits ($000)	2013		2012
Current liability	$	6,576	$	6,568
Non-current liability	6,799		5,659
Total liability for unrecognized tax benefits	$	13,375	$	12,227