Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

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, 2018:

(In thousands)	Trade Discounts, Allowances and Government Chargebacks			Government Rebates and Other Incentives		Returns		Total
Balance as of December 31, 2017	$	60		$	15	$	2	$	77
Provision related to sales in the current year		486			133		34		653
Credit and payments made		(308	)		—		—		(308	)
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