CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net loss	$ (1,210,417)	$ (966,408)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	769,809	806,614
Share-based compensation expense	349,239	84,392
Amortization of premium on available-for-sale securities	31,960	0
Deferred tax benefit (expense)	3,324	(1,060)
Deferred rent	(6,392)	12,694
Amortization of discount on related party debt	0	275,498
Long term incentive plan benefit	0	(21,748)
Changes in operating assets and liabilities:
Accounts receivable, net	68,501	1,340,860
Inventories	(373,741)	(447,745)
Other current assets	(133,392)	(17,646)
Accounts payable	(701,975)	13,501
Interest payable	0	95,447
Accrued compensation	(1,596,337)	(1,175,529)
Accrued liabilities, other	468,368	175,873
Accrued pension liability	11,909	23,611
Deferred revenue	20,487	106,044
Net cash provided by (used in) operating activities	(2,298,657)	304,398
Cash flows from investing activities:
Proceeds from maturity of available-for-sale securities	1,200,000	0
Purchases of available-for-sale securities	(2,438,322)	0
Purchases of property, plant and equipment	(133,017)	(137,761)
Net cash used in investing activities	(1,371,339)	(137,761)
Cash flows from financing activities:
Borrowings from line of credit	2,404,963	2,646,500
Repayments of line of credit	(2,404,963)	(2,646,500)
Proceeds from exercise of stock options	3,953	0
Net cash provided by financing activities	3,953	0
Effect of exchange rates on cash and cash equivalents	0	13,299
Net increase (decrease) in cash and cash equivalents	(3,666,043)	179,936
Cash and cash equivalents at beginning of period	9,369,624	1,976,594
Cash and cash equivalents at end of period	5,703,581	2,156,530
Supplemental disclosure of cash flow information:
Cash paid during the period for income tax	110,550	14,558
Cash paid during the period for interest	$ 13,495	$ 19,360