Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands		Jun. 30, 2016		Dec. 31, 2015		Jun. 30, 2015	[2]	Dec. 31, 2014	[2]
Current assets:
Cash and cash equivalents		$ 6,099	[1],[2]	$ 7,930	[1]	$ 5,949		$ 10,809
Accounts receivable, net of allowances of $14.432 and $14,026, respectively	[1]	262,674		260,029
Deferred income taxes	[1]	19,279		20,891
Income tax receivable	[1]	24,893		20,663
Prepaid expenses and other current assets	[1]	23,595		37,051
Total current assets	[1]	336,540		346,564
Property and equipment, net of accumulated depreciation of $76,317 and $64,780, respectively	[1]	188,313		195,364
Other assets:
Goodwill	[1]	682,013		682,810
Intangible assets, net	[1]	71,407		75,694
Other noncurrent assets	[1]	8,396		7,321
Total other assets	[1]	761,816		765,825
Total assets	[1]	1,286,669		1,307,753
Current liabilities:
Current maturities of debt	[1]	406,378		432,830
Accounts payable	[1]	133,423		116,166
Accrued expenses and other current liabilities	[1]	72,704		81,922
Total current liabilities	[1]	612,505		630,918
Long-term deferred tax liabilities	[1]	105,455		105,088
Other long-term liabilities	[1]	13,445		15,308
Total liabilities	[1]	731,405		751,314
Commitments and contingencies (Note 10)	[1]
Stockholders’ investment:
Common stock $.01 par value; 100,000 shares authorized; 38,322 and 38,266 shares issued and outstanding	[1]	383		383
Additional paid-in capital	[1]	397,917		397,253
Retained earnings	[1]	156,964		158,803
Total stockholders’ investment	[1]	555,264		556,439
Total liabilities and stockholders’ investment	[1]	$ 1,286,669		$ 1,307,753

[1] See Note 13 “Restatement of Previously Issued Financial Statements

[2] See Note 13 “Restatement of Previously Issued Financial Statements.”