Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 6,400,000	$ 6,448,000
Accounts receivable, trade, net	8,205,000	5,345,000
Inventories	10,829,000	10,972,000
Prepaid expenses and other current assets	1,016,000	1,348,000
Total current assets	26,450,000	24,113,000
Assets held for rent, net	4,875,000	3,922,000
Property and equipment, net	5,407,000	5,572,000
Operating lease right-of-use assets, net	892,000	1,040,000
Long-term deposits and other assets	36,000	50,000
Investments	2,500,000	2,500,000
Accrued interest receivable	27,000
Intangible assets, net	21,294,000	21,982,000
Goodwill	33,506,000	33,637,000
Total assets	94,987,000	92,816,000
Current liabilities
Accounts payable	3,522,000	3,119,000
Accrued expenses and other current liabilities	3,080,000	3,369,000
Lease liabilities, operating, current portion	826,000	804,000
Contingent consideration, current portion	365,000	377,000
Warrant liability	17,667,000
Total current liabilities	25,460,000	7,669,000
Warrant liability		39,602,000
Contingent consideration, long-term	1,486,000	1,537,000
Lease liabilities, operating, long-term	332,000	550,000
Other long-term liabilities		4,000
Total liabilities	27,278,000	49,362,000
Commitments and Contingencies (Note 11)
Shareholders’ equity
Preferred stock, $0.001 par value; 1,000,000 shares authorized, Series A, 4,250 shares designated, and 0 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively
Common stock, $0.001 par value; 150,000,000 shares authorized, 21,148,771 and 20,825,452 shares issued and outstanding at March 31, 2020 and December 31 2019, respectively	21,000	21,000
Additional paid-in capital	145,432,000	143,485,000
Accumulated deficit	(77,744,000)	(100,052,000)
Total shareholders’ equity	67,709,000	43,454,000
Total liabilities and shareholders’ equity	$ 94,987,000	$ 92,816,000