Consolidated Balance Sheets - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 27,714,588	$ 32,898,676
Short-term investments	0	15,012,225
Accounts receivable	9,073,173	7,952,478
Inventories	5,326,962	5,724,397
Deferred costs	1,773,446	1,199,217
Prepaid expenses and other current assets	1,376,299	3,274,254
Total current assets	45,264,468	66,061,247
Equipment, molds, furniture and fixtures, net	17,867,412	14,793,084
Patent rights, net	2,044,608	2,434,542
Goodwill	1,095,355	1,095,355
Other assets	53,607	177,943
Total Assets	66,325,450	84,562,171
Current Liabilities:
Accounts payable	7,884,983	5,187,703
Accrued expenses and other liabilities	5,872,846	6,488,032
Deferred revenue	6,149,087	5,143,825
Total current liabilities	19,906,916	16,819,560
Deferred revenue – long term	1,200,000	700,000
Total liabilities	21,106,916	17,519,560
Stockholders’ Equity:
Preferred Stock: $0.01 par, authorized 3,000,000 shares, none outstanding
Common Stock: $0.01 par; authorized 300,000,000 shares; 155,167,677 and 154,848,512 issued and outstanding at December 31, 2016 and 2015, respectively	1,551,677	1,548,485
Additional paid-in capital	297,826,433	295,292,414
Accumulated deficit	(253,445,306)	(229,106,502)
Accumulated other comprehensive loss	(714,270)	(691,786)
Total Stockholders' Equity	45,218,534	67,042,611
Total Liabilities and Stockholders’ Equity	$ 66,325,450	$ 84,562,171

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.