Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Changes in Liability Related to Unrecognized Tax Benefits (Details)

v3.10.0.1
Income Taxes - Summary of Changes in Liability Related to Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]        
Unrecognized tax benefit liability, Beginning Balance $ 4,645 $ 4,357 $ 4,755  
New positions 0 653 0  
Prior period positions:        
Increases 7 491 939  
Decreases (199) (539) (415)  
Increases from current period positions 714 692 615  
Lapse of statute of limitations (69) (781) (1,290)  
Other (197) (228) (247)  
Unrecognized tax benefit liability, Ending Balance 4,901 4,645 4,357  
Accrued interest and penalties 600 600 800 $ 1,100
State        
Schedule Of Unrecognized Tax Benefits [Line Items]        
Net operating losses $ 0 $ 100 $ 300