Employee Benefits - Performance-based Awards (Details) - 2010 Option Plan - Employee And Directors Performance Options $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Shares granted \| shares	11,958
Total fair value of options granted during period (in dollars) \| $	$ 22

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

No definition available.

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration