Condensed Balance Sheets - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 5,774,356	$ 9,968,600
Short-term investments available-for-sale, at fair value	34,955,936
Accounts receivable	3,481,994	6,356,268
Inventory, net of allowance of $62,329 at June 30, 2018 and $62,142 at December 31, 2017	1,002,549	1,180,521
Prepaid expenses and other	845,170	443,068
Total current assets	46,060,005	17,948,457
Deferred offering costs		2,953
Deferred MidCap revolving loan costs	75,184
Property and equipment, net	2,888,995	3,304,890
Total assets	49,024,184	21,256,300
Current liabilities:
Accounts payable	1,306,917	2,438,798
Accrued liabilities	2,427,776	3,746,786
Contract liabilities - current	315,592	665,882
NuvoGen obligation - current	605,979	496,442
Growth Term Loan payable - net of discount and debt issuance costs		5,793,599
Other current liabilities	199,164	200,460
Total current liabilities	4,855,428	13,341,967
NuvoGen obligation - non-current, net of discount	6,970,277	7,520,913
Convertible note, related party - net of debt issuance costs	2,967,487	2,960,760
MidCap Term Loan payable - net of discount and debt issuance costs	6,626,886
Other non-current liabilities	389,490	492,197
Total liabilities	21,809,568	24,315,837
Commitments and Contingencies (Note 14)
Stockholders’ equity (deficit):
Common stock, $0.001 par value; 200,000,000 shares authorized at June 30, 2018 and December 31, 2017, 28,414,524 shares issued and outstanding at June 30, 2018 and 13,929,763 shares issued and outstanding at December 31, 2017	28,414	13,929
Additional paid-in-capital	171,246,278	131,492,595
Accumulated other comprehensive loss	(11,339)
Accumulated deficit	(144,048,737)	(134,566,061)
Total stockholders’ equity (deficit)	27,214,616	(3,059,537)
Total liabilities and stockholders' equity (deficit)	$ 49,024,184	$ 21,256,300

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.