Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Narrative (Details)

v3.10.0.1
Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation [Abstract]      
Stock-based compensation expense $ 11,300 $ 10,600 $ 12,300
Capitalized stock-based compensation $ 4,533 $ 4,246 $ 4,900
Additional time over vesting period 1 year    
Options granted for compensation plan 0 0 0
Unrecognized compensation expense $ 13,900    
Weighted average period 1 year 7 months 6 days