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Business Combinations - Additional Information (Detail) $ / shares in Units, shares in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) acquisition customer_account | Dec. 31, 2017 USD ($) acquisition $ / shares shares | Dec. 31, 2016 USD ($) acquisition $ / shares shares | Dec. 31, 2015 USD ($)
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | $ 11,054,000 |  | $ 2,094,000 |
Maximum Future Contingency payments Acquisitions | $ 198,600,000 |  |  |
Number of acquisitions | acquisition | 23 | 11 |  |
Aggregate purchase price of acquisitions | $ 21,400 | $ 1,500,000 | 917,497 |
Payments to Acquire Businesses, Gross | $ 934,928,000 | 41,471,000 | 124,716,000 |
Document Period End Date | Dec. 31, 2018 |  |  |
Stock Issued During Period, Value, Acquisitions | $ 100,000,000 |  |  |
Goodwill currently deductible for income tax purposes | 640,300,000 | 35,300,000 | 88,900,000 |
Goodwill currently non-deductible for income tax purposes | 77,400,000 |  |  |
Goodwill related to the recorded earn-out payables |  | 6,900,000 | 4,500,000 |
Total revenues related to acquisitions | 82,400,000 | 7,800,000 | 34,200,000 |
Income before income taxes related to acquisitions | 6,300,000 | 2,400,000 | 4,300,000 |
Estimated acquisition earn-out payables | 89,924,000 | 36,175,000 | 63,821,000 | $ 78,387,000
Other Payable | 5,462,000 | 11,708,000 | 10,664,000 |
Business Acquisitions Contingent Consideration At Fair Value | 77,377,000 | 6,921,000 | 4,462,000 |
Net Assets Acquired | 1,117,767,000 | 60,100,000 | 140,334,000 |
Maximum Potential Earn- Out Payable | 147,668,000 | 27,451,000 | 16,285,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 52,917,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 5,829,000 | 69,000 | 684,000 |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 342,008,000 | 18,738,000 | 50,625,000 |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 3,222,000 | 721,000 | 228,000 |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 18,588,000 |  | 20,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 1,151,328,000 | 62,301,000 | 152,106,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | (32,996,000) | (1,512,000) | (8,542,000) |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | (565,000) |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (33,561,000) | (2,201,000) | (11,772,000) |
Accounts payable |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated acquisition earn-out payables | $ 21,100,000 | $ 25,100,000 | $ 31,800,000 |
Purchased customer accounts |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Weighted average life (years) | 15 years | 15 years | 15 years |
Non-compete agreements |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Weighted average life (years) | 5 years | 5 years | 5 years |
Other non-current liability |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated acquisition earn-out payables | $ 68,800,000 | $ 11,100,000 | $ 32,000,000.0 |
Social Security Advocates for the Disabled LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents |  |  | 2,094,000 |
Net Assets Acquired |  |  | 33,989,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment |  |  | 307,000 |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets |  |  | 13,069,000 |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross |  |  | 72,000 |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets |  |  | 0 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  |  | 38,936,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other |  |  | (1,717,000) |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  |  | (4,947,000) |
Social Security Advocates for the Disabled LLC [Member] | Services [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross |  |  | 32,526,000 |
Other Payable |  |  | 0 |
Business Acquisitions Contingent Consideration At Fair Value |  |  | 971,000 |
Net Assets Acquired |  |  | 33,989,000 |
Maximum Potential Earn- Out Payable |  |  | 3,500,000 |
Morstan General Agency, Inc [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents |  |  | 0 |
Net Assets Acquired |  |  | 79,341,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment |  |  | 300,000 |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets |  |  | 26,481,000 |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross |  |  | 39,000 |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets |  |  | 0 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  |  | 80,756,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other |  |  | (1,415,000) |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  |  | (1,415,000) |
Morstan General Agency, Inc [Member] | Wholesale Brokerage [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross |  |  | 66,050,000 |
Other Payable |  |  | 10,200,000 |
Business Acquisitions Contingent Consideration At Fair Value |  |  | 3,091,000 |
Net Assets Acquired |  |  | 79,341,000 |
Maximum Potential Earn- Out Payable |  |  | $ 5,000,000 |
Asset Acquisitions [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of acquisitions | acquisition | 20 | 11 | 7 |
Stock Acquisitions [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of acquisitions | acquisition |  |  | 1 |
Stock Purchases [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of acquisitions | customer_account | 3 |  |  |
Book of Business Purchases [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of acquisitions | 1 | 1 | 3 |
Other Acquisitions [Member] | Various [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 41,471,000 | $ 26,140,000 |
Other Payable |  | 11,708,000 | 464,000 |
Business Acquisitions Contingent Consideration At Fair Value |  | 6,921,000 | 400,000 |
Net Assets Acquired |  | 60,100,000 | 27,004,000 |
Maximum Potential Earn- Out Payable |  | 27,451,000 | 7,785,000 |
Other Acquisitions [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | $ 0 |  |  |
Net Assets Acquired | 22,984,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 1,215,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 11,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 5,008,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 21,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 315,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 22,984,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | 0 |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | 0 |  |  |
Other Acquisitions [Member] | Retail [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 20,400,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 200,000 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 2,384,000 |  |  |
Net Assets Acquired | 22,984,000 |  |  |
Maximum Potential Earn- Out Payable | 3,600,000 |  |  |
Kerxton [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 0 |  |  |
Net Assets Acquired | 16,746,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 663,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 10,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 4,712,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 22,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 419,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 18,249,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | (1,503,000) |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (1,503,000) |  |  |
Kerxton [Member] | Retail [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 13,176,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 1,490,000 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 2,080,000 |  |  |
Net Assets Acquired | 16,746,000 |  |  |
Maximum Potential Earn- Out Payable | 2,920,000 |  |  |
ADG [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 0 |  |  |
Net Assets Acquired | 47,575,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 1,500,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 67,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 9,751,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 21,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 467,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 47,575,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | 0 |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | 0 |  |  |
ADG [Member] | Retail [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 29,471,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 559,000 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 17,545,000 |  |  |
Net Assets Acquired | 47,575,000 |  |  |
Maximum Potential Earn- Out Payable | 20,000,000 |  |  |
Servco [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 8,188,000 |  |  |
Net Assets Acquired | 77,179,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 7,769,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 179,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 16,442,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 1,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 1,478,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 88,486,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | (11,307,000) |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (11,307,000) |  |  |
Servco [Member] | Retail [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 76,245,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 0 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 934,000 |  |  |
Net Assets Acquired | 77,179,000 |  |  |
Maximum Potential Earn- Out Payable | 7,000,000 |  |  |
Tower Hill [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 0 |  |  |
Net Assets Acquired | 21,488,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 0 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 21,468,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 20,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 21,488,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | 0 |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | 0 |  |  |
Tower Hill [Member] | National Programs |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 20,300,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 0 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 1,188,000 |  |  |
Net Assets Acquired | 21,488,000 |  |  |
Maximum Potential Earn- Out Payable | 7,700,000 |  |  |
HSR [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 3,114,000 |  |  |
Net Assets Acquired | 22,123,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 818,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 124,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 5,516,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 65,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 21,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 28,395,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | (5,930,000) |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | (342,000) |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (6,272,000) |  |  |
HSR [Member] | National Programs |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 20,132,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 0 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 1,991,000 |  |  |
Net Assets Acquired | 22,123,000 |  |  |
Maximum Potential Earn- Out Payable | 9,000,000 |  |  |
PDA [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | (248,000) |  |  |
Net Assets Acquired | 24,843,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 1,762,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 310,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 7,700,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 82,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 6,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 26,159,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | (1,093,000) |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | (223,000) |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (1,316,000) |  |  |
PDA [Member] | Services [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 15,025,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 0 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 9,818,000 |  |  |
Net Assets Acquired | 24,843,000 |  |  |
Maximum Potential Earn- Out Payable | 17,975,000 |  |  |
F&I [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 0 |  |  |
Net Assets Acquired | 54,471,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 999,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 34,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 16,611,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 21,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 383,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 54,471,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | 0 |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | 0 |  |  |
F&I [Member] | Retail [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 44,940,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 410,000 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 9,121,000 |  |  |
Net Assets Acquired | 54,471,000 |  |  |
Maximum Potential Earn- Out Payable | 19,500,000 |  |  |
Rodman [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 0 |  |  |
Net Assets Acquired | 35,102,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 1,062,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 45,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 10,129,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 51,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 542,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 38,401,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | (3,299,000) |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (3,299,000) |  |  |
Rodman [Member] | Retail [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 31,121,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 261,000 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 3,720,000 |  |  |
Net Assets Acquired | 35,102,000 |  |  |
Maximum Potential Earn- Out Payable | 9,850,000 |  |  |
Hays [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 0 |  |  |
Net Assets Acquired | 724,600,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 36,254,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 4,936,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 218,600,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 2,600,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 13,977,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 732,584,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | (7,984,000) |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (7,984,000) |  |  |
Hays [Member] | Retail [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 605,000,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 100,000,000 |  |  |
Other Payable | 0 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 19,600,000 |  |  |
Net Assets Acquired | 724,600,000 |  |  |
Maximum Potential Earn- Out Payable | 25,000,000 |  |  |
Dealer Associates [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 0 |  |  |
Net Assets Acquired | 33,100,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 552,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 13,000 |  |  |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 10,986,000 |  |  |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 21,000 |  |  |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 226,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 33,265,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | (165,000) |  |  |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (165,000) |  |  |
Dealer Associates [Member] | Retail [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 28,825,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 1,175,000 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 3,100,000 |  |  |
Net Assets Acquired | 33,100,000 |  |  |
Maximum Potential Earn- Out Payable | 12,125,000 |  |  |
Various [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisitions Purchase Price Allocation Current Assets Cash And Cash Equivalents | 0 |  | 0 |
Net Assets Acquired | 37,556,000 |  | 27,004,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 323,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 100,000 |  | 77,000 |
Business Acquisitions Purchase Price Allocation Amortizable Intangible Assets | 15,085,000 |  | 11,075,000 |
Business Acquisitions Purchase Price Allocation Noncompete Agreements Gross | 297,000 |  | 117,000 |
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets | 754,000 |  | 20,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 39,271,000 |  | 32,414,000 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | (1,715,000) |  | (5,410,000) |
Business Acquisition Purchase Price Allocation Other Liabilities Assumed | 0 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (1,715,000) |  | (5,410,000) |
Various [Member] | Various [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to Acquire Businesses, Gross | 30,293,000 |  |  |
Stock Issued During Period, Value, Acquisitions | 0 |  |  |
Other Payable | 1,367,000 |  |  |
Business Acquisitions Contingent Consideration At Fair Value | 5,896,000 |  |  |
Net Assets Acquired | 37,556,000 |  |  |
Maximum Potential Earn- Out Payable | $ 12,998,000 |  |  |
Two Thousand Seventeen Acquisition [Member] [Domain] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisition, Pro Forma Revenue |  | 1,891,701,000 | 1,784,776,000 |
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax |  | 453,397,000 | 429,490,000 |
Business Acquisition, Pro Forma Net Income (Loss) |  | $ 401,908,000 | $ 261,133,000 |
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Basic | $ / shares |  | $ 1.44 | $ 0.93 |
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Diluted | $ / shares |  | $ 1.41 | $ 0.92 |
Weighted Average Basic Shares Outstanding, Pro Forma | shares |  | 272,580 | 272,278 |
Pro Forma Weighted Average Shares Outstanding, Diluted | shares |  | 277,586 | 275,608 |

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