Basis of Presentation (Employee Stock Ownership Plan) (Details) $ / shares in Units, $ in Thousands	Jun. 30, 2018 USD ($) shares	Jul. 16, 2016 $ / shares shares	Jul. 13, 2016 USD ($) Installment $ / shares shares
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Shares sold and held in employee stock ownership plan (in shares)		171,138	171,138
Employer loan amount | $			$ 1,400
Number of installments for repayment of employer loan | Installment			25
Allocated shares (in shares)	27,384
Unallocated shares (in shares)	143,756
Fair value of unallocated shares | $	$ 1,232
IPO
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Price per share (in usd per share) | $ / shares		$ 8.00	$ 8.00