CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net loss	$ (4,703,250)	$ (11,807,401)
Adjustments to reconcile net loss to net cash from operating activities:
Depreciation and amortization	1,968,810	2,081,953
Share-based payment compensation	1,205,476	1,258,000
Non-cash professional services expenses	297	36,942
Gain on Estate litigation settlement	(5,293,319)	0
Restructuring costs	832,149	2,265,542
Payment of restructuring costs	(1,004,799)	(1,346,693)
Realized gain on marketable securities	0	(3,545)
Provision for returns and doubtful accounts	(68,838)	(391,371)
Deferred income tax provision	(18,407)	(11,737)
Changes in operating assets and liabilities:
Accounts receivable	3,976,230	5,851,286
Prepaid expenses and other current assets	(188,627)	663,592
Inventory	604,967	(109,621)
Other assets	210,587	(32,900)
Accounts payable	(160,432)	(1,075,552)
Accrued expenses and other long-term liabilities	(1,733,806)	(6,211,327)
Deferred revenue	4,333,607	1,339,297
Net cash used in operating activities	(39,355)	(7,493,535)
Cash flows from investing activities:
Sales of marketable securities	31,901,030	20,806,642
Purchases of marketable securities	(35,967,458)	(16,044,295)
Purchases of property and equipment	(688,579)	(1,124,170)
Capitalized software development costs	(100,885)	(830,301)
Security deposits	(44,247)	(250,000)
Purchase of intangible assets	(67,793)	(100,556)
Net cash (used in) provided by investing activities	(4,967,932)	2,457,320
Cash flows from financing activities:
Proceeds from exercise of stock options	24,684	697,500
Dividends paid on Series A redeemable convertible preferred stock	(590,187)	0
Proceeds from issuance of Series A redeemable convertible preferred stock, net of issuance costs	0	8,731,677
Net cash (used in) provided by financing activities	(565,503)	9,429,177
Effect of exchange rate changes on cash and cash equivalents	(18,489)	(93,787)
Net (decrease) increase in cash and cash equivalents	(5,591,279)	4,299,175
Cash and cash equivalents, beginning of period	19,288,340	18,651,468
Cash and cash equivalents, end of period	13,697,061	22,950,643
Supplemental disclosures:
Cash paid for income taxes, net	146,246	59,023
Non-cash financing activities:
Undistributed Series A redeemable convertible preferred stock dividends	$ 186,904	$ 28,875