CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 9,569	$ 15,577
Receivables, less allowance for doubtful accounts of $44,730 and $59,689 at December 31, 2016 and 2015, respectively	111,811	97,353
Inventory	36,165	42,983
Prepaid expenses and other current assets	18,507	27,772
Total current assets	176,052	183,685
Property and equipment, net	32,535	31,939
Goodwill	365,947	308,729
Intangible assets, net	31,043	5,128
Other non-current assets	2,163	1,161
Total assets	607,740	530,642
Current liabilities
Current portion of long-term debt	18,521	24,380
Accounts payable	59,134	65,077
Amounts due to plan sponsors	3,799	3,491
Accrued interest	6,705	6,898
Accrued expenses and other current liabilities	42,191	52,918
Total current liabilities	130,350	152,764
Long-term debt, net of current portion	433,413	393,741
Deferred taxes	2,281	236
Other non-current liabilities	1,257	1,861
Total liabilities	567,301	548,602
Stockholders’ (deficit) equity
Preferred stock, $.0001 par value; 5,000,000 and 4,175,000 shares authorized; no shares issued and outstanding as of December 31, 2016 and 2015, respectively	0	0
Common stock, $.0001 par value; 250,000,000 and 125,000,000 shares authorized; 117,682,543 and 71,421,664 shares issued; and 117,682,543 and 68,767,613 shares outstanding as of December 31, 2016 and 2015, respectively	12	8
Treasury stock, no shares outstanding as of December 31, 2016 and 2,654,051 shares outstanding, at cost, as of December 31, 2015	0	(10,737)
Additional paid-in capital	611,844	531,764
Accumulated deficit	(643,419)	(601,913)
Total stockholders’ (deficit) equity	(31,563)	(80,878)
Total liabilities and stockholders’ (deficit) equity	607,740	530,642
Series A convertible preferred stock, $.0001 par value; 825,000 shares authorized; 21,645 and 635,822 shares issued and outstanding as of December 31, 2016 and 2015, respectively; and, $2,603 and $69,702 liquidation preference as of December 31, 2016 and 2015, respectively
Current liabilities
Convertible preferred stock	2,462	62,918
Series C convertible preferred stock, $.0001 par value; 625,000 shares authorized; 614,177 shares issued and outstanding; and $75,491 liquidation preference as of December 31, 2016
Current liabilities
Convertible preferred stock	$ 69,540	$ 0