Balance Sheet Details

9 Months Ended

Sep. 30, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

5. Balance Sheet Details

The following provides certain balance sheet details:

	December 31,			September 30,
	2017			2018
Fixed Assets
Machinery and equipment	$	2,841,388		$	2,810,226
Furniture and office equipment		147,976			157,391
Computer equipment and software		1,637,034			1,430,669
Leasehold improvements		553,529			570,174
Financed equipment		2,294,762			2,526,081
Construction in process		2,975			128,377
Total fixed assets, gross		7,477,664			7,622,918
Less accumulated depreciation and amortization		(4,354,097	)		(4,721,924	)
Total fixed assets, net	$	3,123,567		$	2,900,994
Accrued Liabilities
Accrued payroll		224,813			387,162
Accrued vacation		474,953			470,473
Accrued bonuses		375,000			804,281
Accrued sales commissions		104,509			42,168
Current portion of deferred rent		116,681			147,771
Accrued other		129,805			102,115
Total accrued liabilities	$	1,425,761		$	1,953,970

Depreciation expense for the nine-month period ended September 30, 2017 was $394,708 and for the nine months ended September 30, 2018 was $580,366. Depreciation expense for the three months ended September 30, 2017 was $159,552 and for the three-month period ended September 30, 2018 was $223,194.