Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v2.4.0.8
Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Mar. 04, 2013
Current: [Abstract]        
Federal $ 22,466 $ 24,981 $ 20,841  
State 2,133 3,462 3,175  
Current Income Tax Expense (Benefit) 24,599 28,443 24,016  
Deferred: [Abstract]        
Federal 4,367 2,452 4,640  
State 489 (408) 710  
Deferred Income Tax Expense (Benefit) 4,856 2,044 5,350  
Income tax expense (benefit) 29,455 30,487 29,366  
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation 3,612 385 747  
Income tax provision [Abstract]        
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 35.00%      
Tax expense at the statutory rate 29,373 29,125 26,798  
State income taxes, net of federal benefit 1,876 1,842 2,542  
Qualified stock options (908) (154) 472  
Meals and entertainment 139 172 207  
Deferred tax asset valuation allowance (85) (39) (17)  
Federal income tax credits (1,023) (619) (675)  
Other 83 160 39  
Income tax expense (benefit) 29,455 30,487 29,366  
Deferred Tax Liabilities and Assets [Abstract]        
Accrued expenses 4,287 4,374    
Allowance for doubtful accounts 745 565    
Non-compete agreements   3,288    
Share-based compensation 6,066 6,471    
Accruals for income tax contingencies 547 56    
Impairment of goodwill and other intangible assets 854 1,170    
Net operating loss carryforwards 253 319    
Total deferred tax assets 12,752 16,243    
Valuation allowance (234) (319)    
Total deferred tax assets, net of valuation allowance 12,518 15,924    
Tax over book depreciation 21,806 16,907    
Non-compete agreements 5,149 0    
Prepaid expenses deductible when paid 2,354 2,202    
Goodwill 8,914 7,973    
Deferred Tax Liabilities, Gross 38,223 27,082    
Net deferred tax liabilities (25,705) (11,158)    
Balance sheet classification of deferred income taxes [Abstract]        
Deferred tax assets, net, current 1,145 1,282    
Deferred tax liabilites, noncurrent (26,850) (12,440)    
Total deferred tax liabilities (25,705) (11,158)    
Income taxes paid 25,168 32,214 19,891  
State net operating loss carryforwards 5,468 7,376    
Increase (Decrease) in valuation allowance for state loss carryforwards 85 10    
Reconciliation of Unrecognized Tax Benefits [Roll Forward]        
Balance at beginning of year 277 481 725  
Additions for tax positions of current year 209   75  
(Reductions) Additions for tax positions of prior years 853      
Reductions for settlement with state taxing authorities   (204) (169)  
Reductions for tax positions of prior years     (150)  
Balance at end of year 1,339 277 481  
Income tax penalties accrued 277 57 57 174
Interest on income taxes accrued 299 160   93
FASI [Member]
        
Deferred: [Abstract]        
Income tax expense (benefit) 846 434 204  
Income tax provision [Abstract]        
Income tax expense (benefit) 846 434 204  
Deferred Tax Liabilities and Assets [Abstract]        
Valuation allowance     $ 39