CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net loss	$ (882,750)	$ (22,094,947)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	3,165,980	3,136,109
Debt conversion expense	0	18,841,407
Loss by equity method investee	128,640	0
Loss on disposal of equipment	1,997	5,640
Amortization of premium on marketable securities	104,757	8,003
Share-based compensation expense	1,452,911	748,119
Amortization of discount on related party debt	0	940,923
Long term incentive plan	0	(74,404)
Deferred income taxes	(80,048)	57,536
Deferred rent	(32,697)	3,777
Restricted stock exchanged for taxes	(17,690)	(57,343)
Changes in operating assets and liabilities:
Accounts receivable	(661,770)	1,359,056
Inventories	276,090	(2,655,221)
Other current assets	(279,327)	253,553
Accounts payable	(90,320)	484,237
Interest payable	0	292,049
Accrued compensation	(768,485)	1,609,281
Accrued liabilities, other	(108,111)	270,612
Accrued pension liability	(85,270)	(116,395)
Deferred revenue	182,804	288,329
Net cash provided by operating activities	2,306,711	3,300,321
Cash flows from investing activities:
Proceeds from maturity of available-for-sale-securities	15,020,000	0
Purchases of available-for-sale securities	(2,438,322)	(18,945,717)
Purchase of equity method investment	(2,000,000)	0
Purchases of property, plant and equipment	(856,875)	(355,145)
Acquisition of business, net of cash acquired	(181,261)	0
Net cash provided by (used in) investing activities	9,543,542	(19,300,862)
Cash flows from financing activities:
Borrowings from line of credit	3,033,385	2,646,500
Repayments of line of credit	(3,033,385)	(2,646,500)
Payments of note payable	(47,329)	0
Payments of secured borrowings	(238,984)	0
Proceeds from exercise of stock options	9,713	0
Proceeds from sale of common stock, net	0	23,428,900
Net cash provided by (used in) financing activities	(276,600)	23,428,900
Effect of exchange rates on cash and cash equivalents	(33,672)	(35,329)
Net increase in cash and cash equivalents	11,539,981	7,393,030
Cash and cash equivalents at beginning of period	9,369,624	1,976,594
Cash and cash equivalents at end of period	20,909,605	9,369,624
Supplemental disclosure of cash flow information:
Cash paid during the period for income tax	284,374	42,957
Cash paid during the period for interest	13,845	62,418
Non-cash financing activities:
Note payable issued in conjunction with acquisition of business	462,184	0
Non-cash debt and interest converted to equity	$ 0	$ 25,327,441