XML 24 R5.htm IDEA: XBRL DOCUMENT v3.19.1
Condensed Consolidated Statements of Operations (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Condensed Consolidated Statements of Operations    
Nonvested stock amortization expenses $ 452 $ 493