Employee Benefits - Performance-based Awards (Details) - Dec. 31, 2014 - 2010 Option Plan - Employee And Directors Performance Options - USD ($) $ in Thousands	Total
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Shares granted	11,958
Total fair value of options granted during period (in dollars)	$ 22
Nonvested options outstanding	1,277,990

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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Balance Type:	na
Period Type:	duration