XML 101 R87.htm IDEA: XBRL DOCUMENT v3.19.1
Commitments and Contingencies (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]    
Daily average required reserve balance $ 1,600 $ 1,500
Required compensating balance on deposit $ 250 $ 250