Disclosures about Fair Value Measurements (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of impaired loans	$ 1,311,000	$ 674,000
Specific valuation allowance	496,000	527,000
Net fair value of impaired loans	$ 814,000	$ 147,000
Assets and liabilities considered financial instruments, percentage	90.00%