CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 14,539	$ 39,457
Restricted cash	4,321	4,950
Accounts receivable, net	114,864	85,522
Inventory	26,689	38,044
Prepaid expenses and other current assets	14,292	18,620
Total current assets	174,705	186,593
Property and equipment, net	28,788	26,973
Goodwill	367,198	367,198
Deferred taxes	1,032	1,098
Intangible assets, net	10,470	19,114
Other non-current assets	1,745	2,116
Total assets	583,938	603,092
Current liabilities
Current portion of long-term debt	3,179	1,722
Accounts payable	67,025	65,963
Amounts due to plan sponsors	956	4,621
Accrued interest	6,706	6,706
Accrued expenses and other current liabilities	29,450	26,118
Total current liabilities	107,316	105,130
Long-term debt, net of current portion	501,495	478,866
Other non-current liabilities	25,842	21,769
Total liabilities	634,653	605,765
Stockholders’ deficit
Preferred stock, $.0001 par value; 5,000,000 shares authorized; no shares issued and outstanding as of December 31, 2018 and 2017, respectively	0	0
Common stock, $.0001 par value; 250,000,000 shares authorized; 128,391,456 shares issued and 128,077,651 shares outstanding at December 31, 2018, and 127,639,118 shares issued and 127,634,012 shares outstanding as of December 31, 2017, respectively	13	13
Treasury stock, 313,805 and 5,106 shares outstanding, at cost, as of December 31, 2018 and 2017, respectively	(950)	(16)
Additional paid-in capital	618,137	624,762
Accumulated deficit	(761,204)	(709,511)
Total stockholders’ deficit	(144,004)	(84,752)
Total liabilities and stockholders’ deficit	583,938	603,092
Series A convertible preferred stock, $.0001 par value; 825,000 shares authorized; 21,630 and 21,645 shares issued and outstanding as of December 31, 2018 and 2017, respectively; and $3,264 and $2,916 liquidation preference as of December 31, 2018 and 2017, respectively
Current liabilities
Convertible preferred stock	3,231	2,827
Series C convertible preferred stock, $.0001 par value; 625,000 shares authorized; 614,177 shares issued and outstanding; and $94,706 and $84,555 liquidation preference as of December 31, 2018 and 2017, respectively
Current liabilities
Convertible preferred stock	$ 90,058	$ 79,252