Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 35,638	$ 25,702
Accounts receivable, net of allowances of $10,404 and $10,891, respectively	293,038	321,629
Income tax receivable	13,838	14,749
Prepaid expenses and other current assets	27,819	36,306
Total current assets	370,333	398,386
Property and equipment, net of accumulated depreciation of $118,064 and $107,037, respectively	163,440	159,547
Other assets:
Goodwill	264,826	264,826
Intangible assets, net	46,062	49,648
Other noncurrent assets	5,737	3,636
Total other assets	316,625	318,110
Total assets	850,398	876,043
Current liabilities:
Current maturities of debt	10,012	9,950
Accounts payable	148,053	171,905
Accrued expenses and other current liabilities	101,105	105,409
Total current liabilities	259,170	287,264
Deferred tax liabilities	11,033	14,282
Other long-term liabilities	18,790	10,873
Long-term debt, net of current maturities	178,472	189,460
Preferred stock	335,979	263,317
Total liabilities	803,444	765,196
Commitments and contingencies (Note 10)
Stockholders’ investment:
Common stock $.01 par value; 105,000 shares authorized; 38,507 and 38,423 shares issued and outstanding	385	384
Additional paid-in capital	403,984	403,166
Retained deficit	(357,415)	(292,703)
Total stockholders’ investment	46,954	110,847
Total liabilities and stockholders’ investment	$ 850,398	$ 876,043