CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 2,156,530	$ 1,976,594
Accounts receivable, net	6,863,488	8,191,391
Inventories	5,034,201	4,584,844
Other	854,269	834,076
Total current assets	14,908,488	15,586,905
Property, plant, and equipment, net	2,488,202	2,554,822
Goodwill	18,749,888	18,749,888
Other intangible assets, net	11,255,151	11,846,009
Deferred tax assets and other	282,252	269,121
Total assets	47,683,981	49,006,745
Current liabilities:
Accounts payable	2,224,481	2,209,473
Income taxes payable	21,750	20,866
Accrued liabilities:
Compensation	2,108,830	3,281,809
Deferred revenue	359,107	307,936
Other	833,818	641,561
Total current liabilities	5,547,986	6,461,645
Convertible debt - related party, net	23,612,351	23,336,854
Interest payable	853,062	757,615
Accrued pension liability	720,780	663,071
Deferred rent	665,324	671,088
Other	190,393	157,453
Total liabilities	31,589,896	32,047,726
Shareholders' equity:
Preferred stock, $0.01 par value 5,000,000 Shares authorized; none issued or outstanding	0	0
Common stock $.01 par value; 100,000,000 shares authorized, 25,953,317 and 26,057,327 shares issued and outstanding at March 31, 2016 and December 31, 2015, respectively	259,535	260,574
Additional paid-in capital	76,571,081	76,485,650
Accumulated deficit	(59,877,115)	(58,910,707)
Accumulated other comprehensive loss	(859,416)	(876,498)
Total shareholders' equity	16,094,085	16,959,019
Total liabilities and shareholders' equity	$ 47,683,981	$ 49,006,745