Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents, (notes 1 and 8) $ 42,486 $ 63,961
Restricted cash 5,075 4,012
Accounts receivable 12,006 22,650
Inventory 35,794 32,752
Prepaid expenses and other current assets 11,511 7,855
Total current assets 106,872 131,230
Restricted cash 40,852 43,823
Property, plant, and equipment, net of accumulated depreciation of $29,204 and $27,970, respectively 8,485 7,255
Leased property, net of accumulated depreciation of $3,280 and $1,700, respectively 42,622 1,667
Goodwill 8,838 8,478
Intangible assets, net of accumulated amortization of $921 and $469, respectively 4,308 4,644
Other assets 12,008 12,359
Total assets 223,985 209,456
Current liabilities:    
Accounts payable 28,612 20,455
Accrued expenses 8,791 9,852
Accrual for loss contracts related to service 2,600 4,100
Deferred revenue 4,227 4,468
Finance obligations 10,472 2,671
Other current liabilities 1,734 1,160
Total current liabilities 56,436 42,706
Accrual for loss contracts related to service 634 5,950
Deferred revenue 12,203 13,997
Common stock warrant liability 885 5,735
Finance obligations 35,258 14,809
Long-term debt 23,541  
Other liabilities 257 370
Total liabilities 129,214 83,567
Redeemable preferred stock    
Series C redeemable convertible preferred stock, $0.01 par value per share (aggregate involuntary liquidation preference $16,664) 10,431 shares authorized; Issued and outstanding: 5,231 at September 30, 2016 and December 31, 2015 1,153 1,153
Stockholders' equity:    
Common stock, $0.01 par value per share; 450,000,000 shares authorized; Issued (including shares in treasury): 181,009,135 at September 30, 2016 and 180,567,444 at December 31, 2015 1,810 1,806
Additional paid-in capital 1,126,007 1,118,917
Accumulated other comprehensive income 1,115 798
Accumulated deficit (1,032,230) (993,876)
Less common stock in treasury: 577,376 at September 30, 2016 and 479,953 December 31, 2015 (3,084) (2,909)
Total stockholders' equity 93,618 124,736
Total liabilities, redeemable preferred stock, and stockholders' equity $ 223,985 $ 209,456