Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 63,647	$ 75,708
Accounts receivable, net	6,251	6,569
Inventory	2,879	2,775
Current portion of net investments in sales-type leases	1,117	880
Current portion of prepaid commission expense	739	689
Prepaid expenses and other current assets	1,799	1,830
Total current assets	76,432	88,451
Property and equipment, net	963	1,107
Operating lease right-of-use assets	3,704	3,796
Net investments in sales-type leases	1,861	1,730
Prepaid commission expense	4,148	3,779
Other assets	1,347	1,305
Total Assets	88,455	100,168
Current liabilities:
Accounts payable	3,610	4,625
Accrued expenses	5,955	9,031
Deferred revenue	2,255	2,228
Current portion of operating lease liabilities	566	559
Current portion of long-term debt, net		11,250
Total current liabilities	12,386	27,693
Long-term debt, net	34,210	19,898
Deferred revenue	1,984	2,106
Operating lease liabilities	3,364	2,619
Total Liabilities	51,944	52,316
Commitments and contingencies (Note 16)
Stockholders’ Equity:
Preferred stock, $0.01 par value: 10,000 shares authorized; no shares issued or outstanding at March 31, 2020 and December 31, 2019
Common stock, $0.01 par value: 200,000 shares authorized; 18,726 and 18,645 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	187	186
Additional paid-in capital	299,024	297,753
Accumulated deficit	(262,700)	(250,087)
Total Stockholders' Equity	36,511	47,852
Total Liabilities and Stockholders’ Equity	$ 88,455	$ 100,168