CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 182,698	$ 90,679
Accounts receivable, net of allowance of $183 and $212 at March 31, 2018 and December 31, 2017, respectively	143,402	127,368
Drivers' advances and other receivables	5,188	4,792
Current portion of net investment in sales-type leases	11,158	10,979
Parts supplies	4,873	4,653
Income tax receivable	83	91
Prepaid and other current assets	31,309	28,149
Total current assets	378,711	266,711
Property and equipment, net	406,997	429,639
Intangible assets, net	91,110	93,120
Goodwill	302,539	302,702
Other long-term assets	31,037	33,496
Total assets	1,210,394	1,125,668
Current liabilities:
Accounts payable	14,316	12,488
Accrued expenses and other liabilities	29,963	25,876
Accrued payroll, benefits and related taxes	13,865	14,004
Accrued insurance and claims	12,732	12,644
Current portion of long-term debt	43,625	43,056
Total current liabilities	114,501	108,068
Line of credit	7,220	4,561
Long-term debt, net of current portion	563,183	569,740
Deferred tax liabilities	89,702	90,434
Other long-term liabilities	1,407	1,632
Total liabilities	776,013	774,435
Commitments and contingencies (Note 15)
Stockholders’ equity:
Common stock, par value $0.0001 per share; 250,000,000 shares authorized, 57,262,288 and 48,712,288 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively	6	5
Additional paid-in-capital	363,434	277,931
Retained earnings (Accumulated deficit)	5,302	7,338
Accumulated other comprehensive income	639	959
Total stockholders’ equity	434,381	351,233
Total liabilities and stockholders’ equity	1,210,394	1,125,668
Series A convertible preferred stock
Stockholders’ equity:
Preferred stock value	$ 65,000	$ 65,000

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.