Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Summary of Product Revenue Allowance And Reserve Categories

The following table summarizes activity in each of the product revenue allowance and reserve categories for the six months ended June 30, 2019 and 2018:

(In thousands)	Trade Discounts, Allowances and Government Chargebacks			Government Rebates and Other Incentives			Returns			Total
Balance as of December 31, 2018	$	601		$	491		$	125		$	1,217
Provision related to sales in the current quarter		741			24			57			822
Credits and payments made		(332	)		(36	)		(33	)		(401	)
Balance as of March 31, 2019		1,010			479			149			1,638
Provision related to sales in the current quarter		1,196			121			92			1,409
Credits and payments made		(1,157	)		(65	)		(6	)		(1,228	)
Balance as of June 30, 2019	$	1,049		$	535		$	235		$	1,819
Balance as of December 31, 2017	$	60		$	15		$	2		$	77
Provision related to sales in the current quarter		186			49			12			247
Credits and payments made		(94	)		—			—			(94	)
Balance as of March 31, 2018		152			64			14			230
Provision related to sales in the current quarter		300			84			22			406
Credits and payments made		(214	)		—			—			(214	)
Balance as of June 30, 2018	$	238		$	148		$	36		$	422

Property Plant and Equipment Estimated Useful Lives

Property and equipment are stated at cost less accumulated depreciation. Depreciation and amortization expense is recognized using the straight-line method over the following estimated useful lives:

	Estimated Useful Life (Years)
Computers, office equipment, and minor computer software	3
Computer software	7
Manufacturing equipment	7-10
Furniture and fixtures	5