XML 76 R65.htm IDEA: XBRL DOCUMENT v3.19.1
Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statement of Earnings (Detail) - Derivatives Not Designated as Hedging Instruments [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Derivatives, Fair Value [Line Items]    
Amount of Gain Recognized in Income on Derivative Instruments $ 384 $ 116
Interest Rate Swaps [Member] | Other Income [Member]    
Derivatives, Fair Value [Line Items]    
Amount of Gain Recognized in Income on Derivative Instruments $ 384 $ 116