Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v3.3.1.900
Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Current: [Abstract]      
Federal $ 8,319 $ 33,631 $ 22,466
State 1,242 4,306 2,133
Current Income Tax Expense (Benefit) 9,561 37,937 24,599
Deferred: [Abstract]      
Federal 12,477 (2,102) 4,367
State 2,054 (919) 489
Deferred Income Tax Expense (Benefit) 14,531 (3,021) 4,856
Income tax expense (benefit) 24,092 34,916 29,455
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation $ 5,413 2,109 3,612
Income tax provision [Abstract]      
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 35.00%    
Tax expense at the statutory rate $ 27,883 33,630 29,373
State income taxes, net of federal benefit 2,178 1,879 1,876
Non-deductible transaction costs 394    
Qualified stock options (120) (96) (908)
Meals and entertainment 216 186 139
Deferred tax asset valuation allowance (11) 39 (85)
Federal qualified property deductions (6,066)    
Federal income tax credits (732) (533) (1,023)
Other 350 (189) 83
Income tax expense (benefit) 24,092 34,916 29,455
Deferred Tax Liabilities and Assets [Abstract]      
Accrued expenses 11,952 6,313  
Allowance for doubtful accounts 936 1,002  
Share-based compensation 5,242 5,698  
Accruals for income tax contingencies 268 300  
Impairment of goodwill and other intangible assets 216 534  
Net operating loss carryforwards 13,620 280  
Total deferred tax assets 32,234 14,127  
Valuation allowance (284) (273)  
Total deferred tax assets, net of valuation allowance 31,950 13,854  
Tax over book depreciation 28,027 19,222  
Intangible assets 25,399 3,639  
Prepaid expenses deductible when paid 5,018 2,488  
Goodwill 13,382 11,189  
Deferred Tax Liabilities, Gross 71,826 36,538  
Net deferred tax liabilities (39,876) (22,684)  
Federal net operating loss 36,034    
Operating Loss Carryforwards, State and Local 23,595 6,500  
Balance sheet classification of deferred income taxes [Abstract]      
Deferred tax liabilites, noncurrent (39,876) (22,684)  
Income taxes paid 25,264 30,087 25,168
Increase (Decrease) in valuation allowance for state loss carryforwards 11 39  
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Balance at beginning of year 771 1,339 277
Additions for tax positions of current year 66 66 209
Additions for tax positions of prior years   63 853
Reductions for settlement with state taxing authorities (64) (697)  
Balance at end of year 773 771 $ 1,339
Income tax penalties accrued 156 170  
Interest on income taxes accrued $ 371 $ 414