Acquisitions and Goodwill (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended | | | | | |
Jun. 30, 2015USD ($)$ / shares | Jun. 30, 2014USD ($)$ / shares | Mar. 31, 2014USD ($) | Jun. 30, 2015USD ($)$ / shares | Jun. 30, 2014USD ($)$ / shares | Dec. 31, 2014USD ($) | Mar. 09, 2015USD ($) | Nov. 30, 2014USD ($) | Sep. 30, 2014USD ($) | Sep. 05, 2014USD ($) | Feb. 02, 2014USD ($) |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Proceeds from term loan | | | | $ 125,000 | $ 0 | | | | | | |
Long-term Debt, Term | | | | 2 year | | | | | | | |
Business Acquisition, Pro Forma Revenue | $ 249,694 | $ 252,109 | | $ 489,839 | 483,473 | | | | | | |
Business Acquisition, Pro Forma Income from Operations | 19,908 | 25,897 | | 25,850 | 37,426 | | | | | | |
Business Acquisition, Pro Forma Net Income (Loss) | $ 11,824 | $ 15,869 | | $ 14,181 | $ 22,854 | | | | | | |
Business Acquisition, Pro Forma Earnings Per Share, Basic | $ / shares | $ 0.38 | $ 0.51 | | $ 0.46 | $ 0.74 | | | | | | |
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares | $ 0.38 | $ 0.51 | | $ 0.46 | $ 0.73 | | | | | | |
Business Acquisition, Goodwill, Expected Tax Deductible Amount | $ 99,248 | | | $ 99,248 | | | | | | | |
Carrying value of goodwill | 206,530 | | | 206,530 | | $ 144,412 | | | | | |
Goodwill, Acquired During Period | | | | $ 62,118 | | | | | | | |
Towne [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Business Acquisition, Cash Paid | | | | | | | $ 62,375 | | | | |
Escrow Deposit | | | | | | | 16,500 | | | | |
Number of service points | | | | 61 | | | | | | | |
Number of independent contractor tractors | | | | 525 | | | | | | | |
Towne revenue | | | | | | 230,000 | | | | | |
Severance Costs | | | | $ 2,456 | | | | | | | |
Restructuring Reserve | | | | 8,717 | | | | | | | |
Business Combination, Acquisition Related Costs | | | | 7,504 | | | | | | | |
Carrying value of goodwill | | | | | | | 62,118 | | | | |
Business Combination, Acquired Receivables, Gross Contractual Amount | | | | | | | 24,068 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | | | | | | | 2,916 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | | | | | | 2,095 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | | | | | | | 614 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets | | | | | | | 2,159 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets | | | | | | | 31,852 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | | 128,118 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | | | | | | | 159,970 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities | | | | | | | 27,311 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other | | | | | | | 3,847 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt | | | | | | | 59,544 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities | | | | | | | 6,893 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | | | | | | | 97,595 | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Net Total Assets | | | | | | | 62,375 | | | | |
CST [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Business Acquisition, Cash Paid | | | | | | | | | | | $ 82,997 |
Noncash or Part Noncash Acquisition, Debt Assumed | | | | | $ 11,215 | | | | | | |
Escrow Deposit | | | | | | | | | | | 10,000 |
Business Combination, Acquisition Related Costs | | | $ 900 | | | | | | | | |
Operating Revenue Since Acquisition Date | | $ 18,072 | | | 28,875 | | | | | | |
Operating Income Since Acquisition Date | | 2,284 | | | 2,286 | | | | | | |
Net Income Since Acquisition Date | | $ 1,388 | | | $ 1,381 | | | | | | |
Business Combination Information, Earnings Per Share of Acquiree since Acquisition Date, Basic | $ / shares | | $ 0.04 | | | $ 0.04 | | | | | | |
Business Combination Information, Earnings Per Share of Acquiree since Acquisition Date, Diluted | $ / shares | | $ 0.04 | | | $ 0.04 | | | | | | |
Carrying value of goodwill | | | | | | | | | | | 51,710 |
Business Combination, Acquired Receivables, Gross Contractual Amount | | | | | | | | | | | 9,339 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | | | | | | | | | | | 101 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | | | | | | | | | | 2,132 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | | | | | | | | | | | 35 |
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets | | | | | | | | | | | 11,607 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | | | | | | 89,140 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | | | | | | | | | | | 100,747 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities | | | | | | | | | | | 6,535 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt | | | | | | | | | | | 11,215 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | | | | | | | | | | | 17,750 |
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Net Total Assets | | | | | | | | | | | 82,997 |
RGL [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Business Acquisition, Cash Paid | | | | | | | | | $ 1,350 | | |
Carrying value of goodwill | | | | | | | | | | $ 4,206 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | | | | | | | | | 287 | |
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets | | | | | | | | | | 287 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | | | | | 7,888 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | | | | | | | | | | 8,175 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities | | | | | | | | | | 1,000 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | | | | | | | | | | 1,000 | |
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Net Total Assets | | | | | | | | | | 7,175 | |
MMT [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Business Acquisition, Cash Paid | | | | | | | | $ 5,825 | | | |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | | | | | | | | $ 1,000 | | | |
Forward Air [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Carrying value of goodwill | 155,960 | | | 155,960 | | 93,842 | | | | | |
Goodwill, Acquired During Period | | | | 62,118 | | | | | | | |
FASI [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Goodwill, Impaired, Accumulated Impairment Loss | (6,953) | | | (6,953) | | (6,953) | | | | | |
Carrying value of goodwill | 12,359 | | | 12,359 | | 12,359 | | | | | |
TQI [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Carrying value of goodwill | $ 45,164 | | | $ 45,164 | | $ 45,164 | | | | | |
Trade Names [Member] | CST [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | | 2 years | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | | | | | | | | | | | 500 |
Noncompete Agreements [Member] | CST [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | | 5 years | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | | | | | | | | | | | 930 |
Noncompete Agreements [Member] | RGL [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | | 5 years | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | | | | | | | | | | 92 | |
Customer Relationships [Member] | Towne [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | | 20 years | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | | | | | | | 66,000 | | | | |
Customer Relationships [Member] | CST [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | | 15 years | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | | | | | | | | | | | $ 36,000 |
Customer Relationships [Member] | RGL [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | | 15 years | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | | | | | | | | | | $ 3,590 | |
Towne possible net working capital shortfall [Member] | Towne [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Escrow Deposit | | | | | | | 2,000 | | | | |
Towne potential claims [Member] | Towne [Member] | | | | | | | | | | | |
Segment Reporting Information [Line Items] | | | | | | | | | | | |
Escrow Deposit | | | | | | | $ 14,500 | | | | |