Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Summary of Components of Accumulated Other Comprehensive Income (Loss), Net of Tax (Details)

v3.6.0.2
Summary of Significant Accounting Policies - Summary of Components of Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance $ (37)  
Other comprehensive gain (loss), net of tax 2 $ (37)
Ending Balance (35) (37)
Unrealized Gains (Losses) on Available-for-sale Investments    
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance (23)  
Other comprehensive gain (loss), net of tax (59)  
Ending Balance (82) (23)
Unrealized gains (losses) on Cash Flow Hedges    
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance (14)  
Other comprehensive gain (loss), net of tax 61  
Ending Balance $ 47 $ (14)