Nature of Business and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Error Corrections and Prior Period Adjustments

The following table shows the amounts of additional paid-in capital, accumulated deficit, deemed dividends on preferred stock and amortization of beneficial conversion feature, and gain on redemption of preferred stock for the applicable periods, as previously reported and as corrected in the consolidated statements of redeemable preferred stock and stockholders' equity and balance sheets (in thousands):

	As Previously Reported				As Corrected
	Additional Paid-in Capital		Accumulated Deficit		Additional Paid-in Capital		Accumulated Deficit
Balance at December 31, 2017	$	230,030	$	(58,422)	$	194,687	$	(23,079)
Deemed dividends on preferred stock and amortization of beneficial conversion feature	—		(2,856)		(2,856)		—
Balance at March 31, 2018	232,039		(60,634)		193,840		(22,435)
Deemed dividends on preferred stock and amortization of beneficial conversion feature*	419		(2,771)		(2,352)		—
Gain on redemption of preferred stock	—		9,075		9,075		—
Balance at June 30, 2018	217,451		(53,580)		185,556		(21,685)
Balance at September 30, 2018	354,487		(51,557)		322,592		(19,662)
Balance at December 31, 2018	372,186		(51,258)		340,291		(19,363)
Balance at March 31, 2019	378,571		(53,682)		346,676		(21,787)
Balance at June 30, 2019	$	543,484	$	(51,691)	$	511,589	$	(19,796)

*The deemed dividends on preferred stock and amortization of beneficial conversion feature within additional paid-in capital as previously reported as shown here reflects a $21.3 million reclassification to the redemption of Series A preferred stock within additional paid-in capital. As discussed above, such presentation reclassifications have no impact to total paid-in capital for any period.

The following table shows the amounts of the redemption of preferred stock, deemed dividends on preferred stock and amortization of beneficial conversion feature, and gain on redemption of preferred stock for the applicable periods, as previously reported and as currently reported in the consolidated statements of redeemable preferred stock and stockholders' equity (in thousands):

	As Previously Reported						As Currently Reported
	Series A Redeemable Convertible Preferred Stock		Immaterial Correction of an Error		Reclassification		Series A Redeemable Convertible Preferred Stock
Balance at March 31, 2018	$	35,471	$	—	$	—	$	35,471
Redemption of Series A Preferred Stock	(50,096)		—		12,273		(37,823)
Deemed dividends on preferred stock and amortization of beneficial conversion feature	5,550		18,150		(21,348)		2,352
Gain on redemption of preferred stock	9,075		(18,150)		9,075		—
Balance at June 30, 2018	$	—	$	—	$	—	$	—