CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 39,457	$ 9,569
Restricted cash	4,950	0
Receivables, less allowance for doubtful accounts of $37,912 and $44,730 at December 31, 2017 and 2016, respectively	85,522	109,086
Inventory	38,044	36,165
Deferred taxes	1,098	0
Prepaid expenses and other current assets	18,620	18,507
Total current assets	187,691	173,327
Property and equipment, net	26,973	32,678
Goodwill	367,198	365,947
Intangible assets, net	19,114	31,043
Other non-current assets	2,116	1,990
Total assets	603,092	604,985
Current liabilities
Current portion of long-term debt	1,722	18,521
Accounts payable	65,963	64,420
Amounts due to plan sponsors	4,621	3,679
Accrued interest	6,706	6,705
Accrued expenses and other current liabilities	26,118	36,822
Total current liabilities	105,130	130,147
Long-term debt, net of current portion	478,866	433,413
Deferred taxes	0	2,281
Other non-current liabilities	21,769	763
Total liabilities	605,765	566,604
Stockholders’ (deficit) equity
Preferred stock, $.0001 par value; 5,000,000 shares authorized; no shares issued and outstanding as of December 31, 2017 and 2016, respectively	0	0
Common stock, $.0001 par value; 250,000,000 and 125,000,000 shares authorized; 127,634,012 and 117,682,543 shares issued and outstanding as of December 31, 2017 and 2016, respectively	13	12
Treasury stock, 5,106 shares outstanding, at cost, as of December 31, 2017 and no shares outstanding as of December 31, 2016.	(16)	0
Additional paid-in capital	624,762	611,682
Accumulated deficit	(709,511)	(645,315)
Total stockholders’ (deficit) equity	(84,752)	(33,621)
Total liabilities and stockholders’ (deficit) equity	603,092	604,985
Series A convertible preferred stock, $.0001 par value; 825,000 shares authorized; 21,645 shares issued and outstanding as of December 31, 2017 and 2016; and $2,916 and $2,603 liquidation preference as of December 31, 2017 and 2016, respectively
Current liabilities
Convertible preferred stock	2,827	2,462
Series C convertible preferred stock, $.0001 par value; 625,000 shares authorized; 614,177 shares issued and outstanding; and, $84,555 and $75,491 liquidation preference as of December 31, 2017 and 2016, respectively.
Current liabilities
Convertible preferred stock	$ 79,252	$ 69,540