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Income Taxes (Tables)
12 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]  
Schedule of Income before Income Tax, Domestic and Foreign
The following is a geographical breakdown of income before the provision for income taxes:
 
Year Ended June 30,  
 
2013
 
2012
 
2011
Domestic income
$
(20,525
)
 
$
(13,064
)
 
$
9,039

Foreign income
198,735

 
150,409

 
127,095

Income before income taxes
$
178,210

 
$
137,345

 
$
136,134

Schedule of Components of Income Tax Expense (Benefit)
The provision for income taxes consisted of the following:
 
Year Ended June 30,  
 
2013
 
2012
 
2011
Current income taxes:
 
 
 
 
 
Domestic
$
747

 
$
6,147

 
$
5,693

Foreign
34,739

 
84,816

 
25,017

 
35,486

 
90,963

 
30,710

Deferred income taxes (recoveries):
 

 
 

 
 

Domestic
3,126

 
6,470

 
1,351

Foreign
(8,922
)
 
(85,262
)
 
(19,130
)
 
(5,796
)
 
(78,792
)
 
(17,779
)
Provision for income taxes
$
29,690

 
$
12,171

 
$
12,931

Schedule of Effective Income Tax Rate Reconciliation
A reconciliation of the combined Canadian federal and provincial income tax rate with our effective income tax rate is as follows:
 
Year Ended June 30,  
 
2013
 
2012
 
2011
Expected statutory rate
26.5
%
 
27.25
%
 
29.25
%
Expected provision for income taxes
$
47,226

 
$
37,427

 
$
39,819

Effect of foreign tax rate differences
(27,026
)
 
(21,496
)
 
(10,258
)
Change in valuation allowance
2,082

 
15,536

 
(4,840
)
Amortization of deferred charges
10,922

 
11,112

 
8,535

Effect of permanent differences
6,008

 
6,902

 
1,577

Effect of Canadian to US dollar functional currency election

 
(5,887
)
 

Withholding taxes and other items
(2,093
)
 
1,473

 
(5,177
)
Impact of internal reorganization of subsidiaries and integration of acquisitions
(7,429
)
 
(32,896
)
 
(16,725
)
 
$
29,690

 
$
12,171

 
$
12,931

Schedule of Deferred Tax Assets and Liabilities
The primary components of the deferred tax assets and liabilities are as follows, for the periods indicated below:
 
June 30,  
 
2013
 
2012
Deferred tax assets
 
 
 
Non-capital loss carryforwards
$
55,946

 
$
47,516

Capital loss carryforwards
3,010

 
3,002

Undeducted scientific research and development expenses
72,555

 
60,415

Depreciation and amortization
16,331

 
12,049

Restructuring costs and other reserves
20,325

 
11,274

Deferred revenue
58,471

 
55,267

Other
11,066

 
3,544

Total deferred tax asset
$
237,704

 
$
193,067

Valuation allowance
$
(80,778
)
 
$
(63,431
)
Deferred tax liabilities
 
 
 
Scientific research and development tax credits
$
(7,484
)
 
$
(8,695
)
Deferred credits

 
(906
)
Acquired intangibles
(55,128
)
 
(11,040
)
Other
(18,336
)
 
(18,181
)
Deferred tax liabilities
$
(80,948
)
 
$
(38,822
)
Net deferred tax asset (liability)
$
75,978

 
$
90,814

Comprised of:
 
 
 
Current assets
$
11,082

 
$
4,003

Long-term assets
135,695

 
115,128

Current liabilities
(1,127
)
 
(1,612
)
Long-term liabilities
(69,672
)
 
(26,705
)
 
$
75,978

 
$
90,814

Summary of Income Tax Contingencies
The aggregate changes in the balance of our gross unrecognized tax benefits (including interest and penalties) were as follows:
Unrecognized tax benefits as of July 1, 2011
$
132,892

Increases on account of current year positions
5,279

Increases on account of prior year positions*
65,994

Decreases due to settlements with tax authorities
(4,935
)
Decreases due to lapses of statutes of limitations
(42,949
)
Unrecognized tax benefits as of July 1, 2012
$
156,281

Increases on account of current year positions
5,736

Increases on account of prior year positions**
22,017

Decreases due to settlements with tax authorities
(5,138
)
Decreases due to lapses of statutes of limitations
(29,993
)
Unrecognized tax benefits as of June 30, 2013
$
148,903

 
*
Included in these balances as of June 30, 2012 are acquired balances of $0.4 million relating to the acquisition of Global 360.
**
Included in these balances as of June 30, 2013 are acquired balances of $8.8 million relating to the acquisition of EasyLink.
Interest And Penalties Related To Liabilities For Income Tax Expense
For the year ended June 30, 2013, we recognized the following amounts as income tax-related interest expense and penalties: 
 
 
Year Ended June 30,
 
 
2013
 
2012
 
2011
Interest expense
 
$
(736
)
 
$
9,383

 
$
3,387

Penalties expense (recovery)
 
65

 
(10,764
)
 
75

Total
 
$
(671
)
 
$
(1,381
)
 
$
3,462

Interest Accrued And Penalties Accrued Related To Income Tax Expense
As of June 30, 2013 and June 30, 2012, the following amounts have been accrued on account of income tax-related interest expense and penalties:
 
As of June 30, 2013
 
As of June 30, 2012
Interest expense accrued *
$
18,210

 
$
19,316

Penalties accrued *
$
6,045

 
$
4,040

*
These balances have been included within "Long-term income taxes payable" within the Consolidated Balance Sheets.