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Guarantees (Tables)
6 Months Ended
Jun. 30, 2019
Guarantees [Abstract]  
Schedule Of Guarantee Obligations [Table Text Block]
Quarter Ended June 30,Six-Month Period Ended June 30,
2019201820192018
(In thousands)
Balance at beginning of period$214$264$346$358
Net (charge-offs/terminations) recoveries11(75)(121)(169)
Balance at end of period$225$189$225$189