CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 2,387,474	$ (2,684,915)
Adjustments to reconcile net income (loss) to net cash from operating activities:
Depreciation	864,158	422,524
Amortization of intangible assets	695,368	789,809
Amortization of debt discount and deferred financing costs	0	1,328,439
Share-based compensation	8,160,678	4,155,005
Increase (decrease) in cash resulting from changes in:
Accounts receivable	(7,211,636)	(6,052,963)
Inventory	(857,914)	(1,510,278)
Prepaid expenses and other current assets	(630,882)	(913,644)
Other assets	0	70,000
Accounts payable	355,269	954,094
Accrued compensation	3,859,434	1,807,143
Accrued expenses	584,023	419,462
Accrued interest	0	(41,641)
Other liabilities	311,520	132,302
Net cash flows from operating activities	8,517,492	(1,124,663)
Cash flows from investing activities:
Purchases of equipment	(1,830,261)	(2,008,407)
Patent application costs	(477,095)	(526,566)
Net cash flows from investing activities	(2,307,356)	(2,534,973)
Cash flows from financing activities:
Proceeds from exercise of warrants	868,625	1,480,124
Proceeds from exercise of stock options	1,497,090	1,516,580
Stock repurchase	(5,312,077)	0
Principal payments of equipment leases	(88,522)	(29,797)
Net cash flows from financing activities	(3,034,884)	2,966,907
Net change in cash	3,175,252	(692,729)
Cash and cash equivalents, beginning of period	44,077,751	6,754,485
Cash and cash equivalents, end of period	$ 47,253,003	$ 6,061,756