Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 101,858	$ 28,165
Trade accounts receivable, net of allowance for doubtful accounts of $637 and $417 in 2018 and 2017, respectively	11,394	10,875
Inventories	4,476	4,978
Prepaid expenses and other current assets	1,420	1,011
Total current assets	119,148	45,029
Property, plant and equipment, net	5,655	6,219
Intangible assets, net	1,204	1,428
Goodwill	38,182	38,182
Other long-term assets		245
Total assets	164,189	91,103
Current liabilities:
Accounts payable	230	2,043
Accrued liabilities	9,977	8,827
Accrued compensation	5,409	4,392
Short-term debt		789
Total current liabilities	15,616	16,051
Other long-term liabilities	516	993
Long-term debt, net	43,824	25,886
Total liabilities	59,956	42,930
Commitments and contingencies (Note 8)
Stockholders’ equity:
Common stock, $0.001 par value, 100,000,000 shares authorized; 17,573,669 and 10,849,385 shares issued and outstanding in 2018 and 2017, respectively	18	11
Additional paid-in capital	217,329	125,999
Accumulated other comprehensive loss		(1)
Accumulated deficit	(113,114)	(77,836)
Total stockholders’ equity	104,233	48,173
Total liabilities and stockholders’ equity	$ 164,189	$ 91,103