Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 41,786	$ 61,365
Accounts receivable, net of allowance of $8,162 in 2020 and $5,933 in 2019	170,063	180,416
Other receivables	7,320	3,396
Prepaid expenses and other	23,409	10,942
Restricted cash	3,213	153
Current assets of discontinued operations	89	155
Total current assets	245,880	256,427
Operating lease right-of-use assets	19,864	20,095
Property and equipment, net	20,793	23,243
Goodwill	135,216	135,216
Intangible assets, net	92,242	19,911
Equity investment	131,974	130,869
Other assets	8,365	11,620
Total assets	654,334	597,381
Current liabilities:
Current portion of finance lease liabilities	199	308
Accounts payable	8,293	9,805
Current portion of operating lease liabilities	7,016	6,730
Accrued expenses	90,695	38,733
Accrued transportation costs	84,054	87,063
Deferred revenue	689	227
Self-funded insurance programs	8,864	5,890
Current liabilities of discontinued operations	1,504	1,430
Total current liabilities	201,314	150,186
Finance lease liabilities, less current portion	0	45
Operating lease liabilities, less current portion	13,886	14,502
Long-term contract payables	26,079	0
Other long-term liabilities	12,950	15,029
Deferred tax liabilities	34,348	22,907
Total liabilities	288,577	202,669
Commitments and contingencies (Note 13)
Redeemable convertible preferred stock
Convertible preferred stock, net: Authorized 10,000,000 shares; $0.001 par value; 54,882 and 798,788, respectively, issued and outstanding; 5.5%/8.5% dividend rate	5,299	77,120
Stockholders’ equity
Common stock: Authorized 40,000,000 shares; $0.001 par value; 19,254,090 and 18,073,763, respectively, issued and outstanding (including treasury shares)	19	18
Additional paid-in capital	402,433	351,529
Retained earnings	185,917	183,733
Treasury shares, at cost, 5,285,085 and 5,088,782 shares, respectively	(227,911)	(217,688)
Total stockholders’ equity	360,458	317,592
Total liabilities, redeemable convertible preferred stock and stockholders’ equity	$ 654,334	$ 597,381