v3.6.0.2
Fair value measurement (Tables)
12 Months Ended
Dec. 31, 2016
Fair value measurement  
Schedule of financial assets that are measured at fair value on a recurring basis

                                                                                                                                                                                                                   

At December 31, 2016

 

Level 1

 

Level 2

 

Level 3

 

Total

 

Assets:

 

 

 

 

 

 

 

 

 

 

 

 

 

Money market accounts

 

$

2,239 

 

$

 

$

 

$

2,239 

 

​  

​  

​  

​  

​  

​  

​  

​  

Total assets

 

$

2,239 

 

$

 

$

 

$

2,239 

 

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

 

                                                                                                                                                                                    

At December 31, 2015

 

Level 1

 

Level 2

 

Level 3

 

Total

 

Assets:

 

 

 

 

 

 

 

 

 

 

 

 

 

Money market accounts

 

$

2,230 

 

$

 

$

 

$

2,230 

 

​  

​  

​  

​  

​  

​  

​  

​  

Total assets

 

$

2,230 

 

$

 

$

 

$

2,230 

 

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​