CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ 12,256	$ (4,703,250)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	1,511,147	1,968,810
Share-based payment compensation	1,098,305	1,205,476
Non-cash professional services expenses	74,642	297
Gain on Estate litigation settlement	0	(5,293,319)
Restructuring costs	172,995	832,149
Payment of restructuring costs	(469,247)	(1,004,799)
Loss on disposal of fixed assets	45,213	0
Benefit for returns and doubtful accounts	(20,004)	(68,838)
Deferred income tax provision (benefit)	41,208	(18,407)
Changes in operating assets and liabilities:
Accounts receivable	3,837,502	3,976,230
Prepaid expenses and other current assets	(73,428)	(188,627)
Inventory	195,622	604,967
Other assets	15,978	210,587
Accounts payable	144,828	(160,432)
Accrued expenses and other long-term liabilities	1,010,797	(1,733,806)
Deferred revenue	(11,623,998)	4,333,607
Net cash used in operating activities	(4,026,184)	(39,355)
Cash flows from investing activities:
Sales of marketable securities	11,116,000	31,901,030
Purchases of marketable securities	(10,916,401)	(35,967,458)
Purchases of property and equipment	(741,926)	(688,579)
Proceeds from sale of fixed assets	3,130	0
Capitalized software development costs	(14,100)	(100,885)
Security deposits	193,790	(44,247)
Purchase of intangible assets	(177,826)	(67,793)
Net cash used in investing activities	(537,333)	(4,967,932)
Cash flows from financing activities:
Proceeds from exercise of stock options	59,242	24,684
Repurchase of common stock	(137,859)	0
Dividends paid on Series A redeemable convertible preferred stock	(377,690)	(590,187)
Net cash used in financing activities	(456,307)	(565,503)
Effect of exchange rate changes on cash and cash equivalents	(370,688)	(18,489)
Net decrease in cash and cash equivalents	(5,390,512)	(5,591,279)
Cash and cash equivalents, beginning of period	10,873,891	19,288,340
Cash and cash equivalents, end of period	5,483,379	13,697,061
Supplemental disclosures:
Cash paid for income taxes, net	158,313	146,246
Non-cash financing activities:
Undistributed Series A redeemable convertible preferred stock dividends	$ 377,690	$ 186,904