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11. INCOME TAXES (Tables)
12 Months Ended
Dec. 31, 2013
Income Tax Disclosure [Abstract]  
Income tax expense (benefit)
   Years Ended December 31, 
   2013   2012   2011 
             
State current tax  $643   $1,160   $820 
Other current tax   (39)   32     
Federal deferred tax   3,794    (46,901)    
State deferred tax   (888)   (9,518)    
Income tax expense (benefit)  $3,510   $(55,227)  $820 
Reconciliation of income tax expense
   Years Ended December 31, 
   2013   2012   2011 
             
Federal tax   34.00%    34.00%    34.00% 
State franchise tax, net of federal benefit   9.78%    17.49%    6.74% 
Non deductible expenses   2.05%    1.59%    4.97% 
Equity compensation   35.39%    10.69%    9.43% 
Changes in valuation allowance   -17.88%    -1325.53%    -45.09% 
Other   -3.70%    0.00%    0.00% 
Income tax expense (benefit)   59.64%    -1261.76%    10.05% 
Deferred tax assets
   December 31, 
Deferred tax assets:  2013   2012 
Net operating losses  $82,630   $81,348 
Accrued expenses   11,663    9,679 
Unfavorable contract liability   3,365    3,901 
Equity compensation   645    2,406 
Allowance for doubtful accounts       1,831 
Other   1,400    1,194 
Valuation allowance   (6,593)   (7,645)
Total deferred tax assets  $93,110   $92,714 
           
Deferred tax liabilities:          
Property & equipment   (7,948)   (9,680)
Goodwill   (15,101)   (14,221)
Intangibles   (12,162)   (10,411)
Allowance for doubtful accounts   (3,061)    
Other   (1,603)   (2,260)
Total deferred tax liabilities  $(39,875)  $(36,572)
           
Net deferred tax asset  $53,235   $56,142 
Schedule of net operating loss carryforwards
Year Ended  Total Net
Operating Loss Carryforwards
   Amount
Subject to 382 limitation
 
2014  $   $ 
2015        
2016        
2017   15,184     
2018   12,284     
Thereafter   191,471    23,475 
   $218,939   $23,475 
Schedule of unrecognized tax benefits
Unrecognized tax benefit at January 1, 2011   2,923 
Additional based on current year tax positions   833 
Unrecognized tax benefit at December 31, 2011   3,756 
Additional based on current year tax positions   428 
Unrecognized tax benefit at December 31, 2012  $4,184 
Reduction based on prior year tax positions   (214)
Unrecognized tax benefit at December 31, 2013  $3,970