CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating activities
Net loss	$ (3,440,705)	$ (9,955,395)	$ (11,718,353)
Adjustments to reconcile net loss to net cash used in operating activities:
Realization of cumulative translation adjustment	229,192	0	0
Share-based compensation expense	613,017	1,655,647	1,362,716
Change in fair value of derivative instruments	(299,477)	(508,817)	444,622
Depreciation expense	141,604	149,958	182,487
Deferred income taxes	61,746	61,746	61,746
Non-cash interest expense	(45,358)	83,021	135,162
Restructuring expense related to property and equipment	36,981	0	0
Gain on the disposal of property and equipment	(7,600)	(5,394)	(3,500)
Changes in operating assets and liabilities:
Accounts receivable	(401,338)	1,316,457	1,005,528
Unbilled accounts receivable	(665,914)	1,902,094	1,914,917
Prepaid expenses and other current assets	5,202	(5,367)	282,057
Accounts payable	129,726	(736,776)	(569,120)
Accrued restructuring expenses	481,761	0	0
Accrued expenses and other liabilities	(54,818)	(2,089,493)	773,566
Deferred revenue	0	(341,723)	(1,040,032)
Net cash used in operating activities	(3,215,981)	(8,474,042)	(7,168,204)
Investing activities
Purchases of property and equipment	(86,507)	(92,269)	(84,579)
Proceeds from the sale of property and equipment	7,600	8,000	3,500
Net cash used in investing activities	(78,907)	(84,269)	(81,079)
Financing activities
Repayment of debt	(750,007)	(999,996)	(749,997)
Net repayment of revolving credit agreement	0	(1,091,740)	(238,767)
Net proceeds from exercise of warrants	0	683,325	0
Proceeds from issuance of common stock, including exercise of stock options, net of offering costs	973,132	18,141,935	6,018,891
Net cash provided by financing activities	223,125	16,733,524	5,030,127
Effects of exchange rates on cash and cash equivalents	(1,775)	(12,841)	(1,382)
Increase (decrease) in cash and cash equivalents	(3,073,538)	8,162,372	(2,220,538)
Cash and cash equivalents, at beginning of year	18,643,351	10,480,979	12,701,517
Cash and cash equivalents, at end of year	15,569,813	18,643,351	10,480,979
Supplemental disclosure of cash flow information
Cash paid for interest	$ 108,391	$ 128,073	$ 234,119