Balance Sheet Accounts (Tables)
 9 Months Ended
Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of inventory, current
September 30,
2020		December 31,
2019
(in thousands)
Raw materials$6,188 $5,506 
Work in process1,256 1,200 
Finished goods20,956 21,954 
$28,400 $28,660 
Property, Plant and Equipment
September 30,
2020		December 31,
2019
(in thousands)
Machinery and equipment$9,010 $8,045 
Building improvements6,456 6,443 
Furniture and fixtures3,952 3,614 
Building2,472 2,472 
Leasehold improvements2,031 2,101 
Land802 802 
Vehicles397 463 
Construction in Process161 — 
Total25,281 23,940 
Less: Accumulated depreciation and amortization(9,018)(7,522)
$16,263 $16,418 
Schedule of Accrued Liabilities
Accrued liabilities consisted of the following:
September 30,
2020		December 31,
2019
(in thousands)
Performance bonus$1,672 $2,080 
Payroll and related expenses3,235 1,996 
Bonus feature of stock option grants5,380 4,212 
Commissions465 522 
Professional and legal services456 500 
Short-term minimum lease payments under capital leases53 258 
Warranty reserve275 313 
Advisory board and board of director related expenses80 124 
Other476 672 
$12,092 $10,677 
Other Current Liabilities
Other liabilities, short-term consisted of the following:
September 30,
2020		December 31,
2019
(in thousands)
Contingent equity consideration$— $922 
Deferred revenue683 785 
Cash payable for asset acquisitions412 492 
$1,095 $2,199 
Other Noncurrent Liabilities
Other liabilities, long-term consisted of the following:
September 30,
2020		December 31,
2019
(in thousands)
Deferred revenue$1,867 $1,344 
Cash payable for asset acquisitions406 781 
Other309 336 
$2,582 $2,461