Consolidated Statements of Operations (Unaudited) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
|
| Income Statement [Abstract] | ||||
| Revenue | $ 443,829,924 | $ 371,642,242 | $ 849,107,456 | $ 655,133,816 |
| Costs and expenses: | ||||
| Transportation costs | 358,652,347 | 302,100,945 | 683,103,064 | 532,340,803 |
| Selling, general and administrative expenses | 70,532,891 | 61,450,284 | 140,009,379 | 105,478,097 |
| Depreciation and amortization | 7,598,376 | 5,251,020 | 15,127,709 | 9,124,157 |
| Income from operations | 7,046,310 | 2,839,993 | 10,867,304 | 8,190,759 |
| Interest income | 0 | 23,909 | 0 | 23,909 |
| Interest expense | (3,524,166) | (4,350,256) | (7,027,561) | (4,388,224) |
| Other expense | 0 | (74,274) | 0 | (126,295) |
| Interest and other expense | (3,524,166) | (4,400,621) | (7,027,561) | (4,490,610) |
| Income (Loss) before provision for income taxes | 3,522,144 | (1,560,628) | 3,839,743 | 3,700,149 |
| Income tax (expense) benefit | (1,591,375) | 879,000 | (1,646,363) | (1,054,000) |
| Net income (loss) | $ 1,930,769 | $ (681,628) | $ 2,193,380 | $ 2,646,149 |
| Earnings (Loss) per common share: | ||||
| Basic (in usd per share) | $ 0.07 | $ (0.03) | $ 0.08 | $ 0.10 |
| Diluted (in usd per share) | $ 0.07 | $ (0.03) | $ 0.07 | $ 0.10 |