CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 30,865,936	$ 28,701,824
Restricted cash and cash equivalents, short-term	10,322,289	10,138,890
Accounts receivable	1,768,981	3,154,370
Inventory	15,416,808	26,209,964
Prepaid expenses and other current assets	571,646	954,426
Total current assets	58,945,660	69,159,474
Property, plant and equipment, net	262,966	299,477
Restricted cash and cash equivalents, long-term	12,091,399	17,333,332
Deferred costs	83,190,032	72,649,277
Goodwill	898,334	898,334
Other assets	642,083	642,083
Total assets	156,030,474	160,981,977
Current liabilities
Accounts payable	3,475,102	2,517,072
Accrued expenses and other current liabilities	3,097,915	4,584,752
Warrant liability	7,059,262	6,727,409
Total current liabilities	13,632,279	13,829,233
Deferred revenue	376,480,126	367,483,905
Deferred income tax liability, net	307,256	286,066
Other liabilities	238,323	247,989
Long-term debt	68,783,206	66,553,053
Total liabilities	459,441,190	448,400,246
Commitments and Contingencies
Stockholders’ deficiency
Common stock ($.0001 par value, 600,000,000 shares authorized, 78,908,929 and 78,692,612 issued and outstanding at June 30, 2017, and December 31, 2016, respectively)	7,891	7,869
Additional paid-in capital	213,838,069	213,714,154
Accumulated deficit	(517,256,676)	(501,140,292)
Total stockholders’ deficiency	(303,410,716)	(287,418,269)
Total liabilities and stockholders’ deficiency	$ 156,030,474	$ 160,981,977

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.