Statements Of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net earnings	$ 1,435,229	$ 1,176,967
Adjustments to reconcile net earnings to cash used in operating activities:
Depreciation	140,465	140,848
Amortization of intangibles	16,497	49,831
Amortization of deferred finance costs	24,657	24,657
Share-based compensation	216,586	243,161
Loss on asset disposal		14,598
Adjustment of warrants	(2,590,361)	(3,129,308)
Changes in operating assets and liabilities:
Accounts receivable	(2,350,333)	(650,976)
Inventories	(299,603)	(277,266)
Prepaid expenses and other current assets	97,206	18,809
Other assets	(57,059)	(2,153)
Accounts payable	165,322	(407,899)
Accrued liabilities	(247,570)	(405,468)
Deferred revenue	1,382,082	536,756
Other liabilities	45,497	136
Net cash used in operating activities	(2,021,385)	(2,667,307)
Cash flows from investing activities
Purchase of fixed assets	(9,990)	(4,297)
Net cash used in investing activities	(9,990)	(4,297)
Cash flows from financing activities
Payments of deferred financing costs		(100,000)
Proceeds from issuance of stock, net of issuance costs	13,622	9,336
Proceeds from warrant exercise	9,945,164
Net cash provided by (used in) financing activities	9,958,786	(90,664)
Net increase (decrease) in cash and cash equivalents	7,927,411	(2,762,268)
Cash and cash equivalents at beginning of period	3,686,302	8,501,392
Cash and cash equivalents at end of period	$ 11,613,713	$ 5,739,124