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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2012
Income Taxes [Abstract]  
Components Of Income (Loss) Before Taxes From Continuing Operations
    2012   2011   2010  
Domestic $ 18,468 $ 13,403 $ (93,285 )
Foreign   3,699   3,482   1,006  
Income (loss) before taxes from continuing operations $ 22,167 $ 16,885 $ (92,279 )
Summary Of Provision For Income Taxes For Continuing Operations
    2012     2011     2010  
Current:                  
U.S. Federal $ 5,780   $ 139   $ (6,955 )
State   1,483     920     285  
Foreign   1,260     1,582     376  
Total current   8,523     2,641     (6,294 )
Deferred:                  
U.S. Federal   844     4,998     (10,847 )
State   489     783     482  
Foreign   (339 )   (753 )   (264 )
Total deferred   994     5,028     (10,629 )
Provision for (benefit of) income taxes $ 9,517   $ 7,669   $ (16,923 )
Provision For (Benefit Of) Income Taxes From Discontinued Operations
    2012     2011   2010  
Current:                
U.S. Federal $ (98 ) $ 5,643 $ (542 )
State   (186 )   622   61  
Foreign       67   254  
Total current   (284 )   6,332   (227 )
Deferred:                
U.S. Federal       166   (10,192 )
State       35   (972 )
Foreign         (22 )
Total deferred       201   (11,186 )
Provision for (benefit of) income taxes $ (284 ) $ 6,533 $ (11,413 )
Provision For (Benefit Of) Income Taxes From Continuing Operations Differs From The Federal Statutory Rate
    2012     2011     2010  
Statutory rate $ 7,758   35.0 % $ 5,910   35.0 % $ (32,298 ) 35.0 %
Intangible asset impairment   1,514   6.8 %     0.0 %   14,560   -15.8 %
State taxes, less federal effect   1,282   5.8 %   1,107   6.6 %   499   -0.5 %
Non-deductible expenses   284   1.3 %   1,443   8.5 %   984   -1.1 %
Foreign rate differential   (335 ) -1.5 %   (344 ) -2.0 %   (68 ) 0.1 %
Uncertain tax positions   (872 ) -3.9 %   (228 ) -1.4 %   305   -0.3 %
Other   (114 ) -0.6 %   (219 ) -1.3 %   (905 ) 0.9 %
  $ 9,517   42.9 % $ 7,669   45.4 % $ (16,923 ) 18.3 %
Deferred Tax Liabilities (Assets)
    2012     2011  
Depreciation $ 20,116   $ 22,782  
Goodwill   28,130     21,686  
Intangible assets   22,587     24,111  
Other   1,680     2,046  
Gross deferred tax liabilities   72,513     70,625  
 
Equity compensation   (9,897 )   (8,526 )
Other   (15,975 )   (16,315 )
Gross deferred tax assets   (25,872 )   (24,841 )
Valuation allowances   2,574     2,613  
Deferred tax assets, net of valuation allowances   (23,298 )   (22,228 )
Net deferred tax liabilities $ 49,215   $ 48,397  
Summary Of Valuation Allowance
    2012     2011     2010  
Balance as of January 1 $ 2,613   $ 2,829   $ 1,779  
Cost charged to the tax provision   266         2,436  
Write-offs   (305 )   (216 )   (1,386 )
Balance as of December 31 $ 2,574   $ 2,613   $ 2,829  
Income Taxes Paid, Net Of Tax Refunds
    2012     2011   2010
(Payments made) refunds received for income taxes, net $ (8,944 ) $ 2,000 $ 6,085
Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits
    2012     2011  
Balance as of January 1 $ 2,487   $ 2,160  
Additions for acquisitions       557  
Additions for tax positions of the current year   68     218  
Additions for tax positions of prior years   67     34  
Reductions for tax positions of prior years for:            
Settlements and changes in judgment   (557 )   (186 )
Lapses of applicable statute of limitations   (380 )   (296 )
Balance as of December 31 $ 1,685   $ 2,487  
Interest (Net Of Federal Tax Benefit) And Penalties Recognized
    2012     2011   2010
Interest and penalties recognized as (income) expense $ (48 ) $ 10 $ 115