Benefit Plans - Deferred Stock Rights (Details)	12 Months Ended
Dec. 31, 2016 shares
Deferred Rights (in shares)
Outstanding, beginning of year	81,693
Granted	684
Exercised	0
Outstanding, end of year	82,377

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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