SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND RECENT ACCOUNTING PRONOUNCEMENTS (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary of Components of Accounts Receivable

The following table summarizes the components of the Company’s accounts receivable for the period indicated:

	As of December 31, 2016		As of December 31, 2015
	(in thousands)
Product sales	$	4,002	$	—
Unbilled receivables		1,226		3,977
Total accounts receivable	$	5,228	$	3,977

Summary of Components of Inventory

The following table summarizes the components of the Company’s inventory for the period indicated:

	As of December 31, 2016		As of December 31, 2015
	(in thousands)
Raw materials	$	9,531	$	—
Work in progress		3,175		—
Finished goods		107		—
Total inventory	$	12,813	$	—

Summary of Estimated Useful Lives of Property and Equipment

The Company generally depreciates the cost of its property and equipment using the straight-line method over the estimated useful lives of the respective assets, which are summarized as follows:

Asset Category	Useful lives
Lab equipment	5 years
Office equipment	5 years
Software and computer equipment	3 - 5 years
Leasehold improvements	Lesser of the useful life or the term of    the respective lease
Land	Not depreciated
Building	30 years
Construction in Progress	Not depreciated until put into service

Summary of Estimated Future Amortization for Intangible Assets

The following table summarizes the estimated future amortization for intangible assets for the next five years:

	As of December 31, 2016 (in thousands)
2017	$	705
2018		704
2019		698
2020		670
2021		652
Total	$	3,429