Fair value measurements (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Summary Of Cash Equivalents And Marketable Securities Measured At Fair Value On A Recurring Basis

The following tables summarize the cash equivalents measured at fair value on a recurring basis as of June 30, 2019 and December 31, 2018:

	Level 1		Level 2		Level 3		Balance as of June 30, 2019
Cash equivalents	$	2,360,092	$	—	$	—	$	2,360,092
	$	2,360,092	$	—	$	—	$	2,360,092

	Level 1		Level 2		Level 3		Balance as of December 31, 2018
Cash equivalents	$	2,333,771	$	—	$	—	$	2,333,771
	$	2,333,771	$	—	$	—	$	2,333,771