SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2016
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES.  
Schedule of financial instruments measured at fair value by level within fair value hierarchy

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Significant

 

 

 

 

 

 

 

 

 

 

Quoted Prices

 

 

other

 

 

Significant

 

 

 

 

 

 

 

in active

 

 

observable

 

 

unobservable

 

 

 

 

 

 

 

markets

 

 

inputs

 

 

inputs

 

Description

    

 

Total

    

 

(Level 1)

    

 

(Level 2)

    

 

(Level 3)

 

December 31, 2016

 

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds, included in cash equivalents

 

$
125,515

 

$
125,515

 

$

 —

 

$

 —

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2015

 

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds, included in cash equivalents

 

$
94,912

 

$
94,912

 

$

 —

 

$

 —

 

 

Schedule of estimated useful lives of property and equipment

 

 

 

 

 

 

 

 

Asset Category

    

Estimated Useful Life

 

Machinery and equipment

 

 
5

years

 

Computers and office equipment

 

 

3 - 5

years

 

Furniture and fixtures

 

 
7

years

 

Leasehold improvements

 

 

Lesser of remaining lease term and estimated useful life