Summary of Significant Accounting Policies Stock-based Compensation Summary (Details 2)	6 Months Ended
Jun. 30, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Stock Bonus And Restricted Stock Grants In Period \| shares	10,248
Share Based Compensation Arrangement By Share Based Payment Award Stock Bonus And Restricted Stock Grants In Period Weighted Average Grant Date Fair Value \| $ / shares	$ 15.61

The weighted average grant date fair value for grants of stock bonus and restricted stock awards made during the period under equity incentive plans.

No definition available.

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