Quarterly report pursuant to Section 13 or 15(d)

STOCK BASED AND DEFERRED COMPENSATION - Summary of Additional Information Regarding Stock Plan (Details)

v3.19.1
STOCK BASED AND DEFERRED COMPENSATION - Summary of Additional Information Regarding Stock Plan (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Summary of stock based compensation agreements    
Unrecognized stock-based compensation cost $ 28,410 $ 24,954
Weighted average years expense recognition period 2 years 11 months 12 days 2 years 2 months 27 days
Total stock-based awards outstanding (in shares) [1] 1,356,443 1,301,745
[1] Includes unvested restricted stock, performance-based awards (assuming 100% payout) and restricted stock units.