CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss	$ (1,751,998)	$ (7,831,494)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	553,455	747,974
Share-based payment compensation	501,410	637,231
Non-cash professional services expenses	41,159	1,480,725
Loss on disposal of fixed assets	63,774	0
Provision for returns and doubtful accounts	99,312	61,068
Deferred income taxes	30,124	(265,756)
Changes in operating assets and liabilities:
Accounts receivable	1,961,276	1,787,845
Prepaid expenses and other current assets	403,937	377,103
Inventory	0	64,353
Other assets	(154,832)	23,429
Accounts payable	193,640	(42,587)
Accrued expenses and other long-term liabilities	(1,098,547)	(289,754)
Deferred revenue	(2,487,989)	(541,348)
Net cash used in operating activities	(1,645,279)	(3,791,211)
Cash flows from investing activities:
Sales of marketable securities	0	6,066,000
Purchases of marketable securities	0	(150,000)
Purchases of property and equipment	(44,163)	(110,421)
Security deposits	(17,152)	82,311
Purchase of intangible assets	(45,517)	(61,506)
Net cash (used in) provided by investing activities	(106,832)	5,826,384
Cash flows from financing activities:
Payments for tax withholding for share-based compensation	(25,710)	0
Net cash used in financing activities	(25,710)	0
Effect of exchange rate changes on cash and cash equivalents	33,988	(123,221)
Net (decrease) increase in cash and cash equivalents	(1,743,833)	1,911,952
Cash and cash equivalents, beginning of period	3,391,528	6,013,382
Cash and cash equivalents, end of period	1,647,695	7,925,334
Supplemental disclosures:
Cash paid for income taxes, net	135,915	443,908
Non-cash investing and financing activities:
Undistributed Series A redeemable convertible preferred stock dividends	419,664	195,366
Series A redeemable convertible preferred stock dividend payment	$ 0	$ 381,413