Summary of Significant Accounting Policies (Details) $ / shares in Units, $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2017 USD ($) branches segment shares	Jun. 30, 2016 USD ($) $ / shares shares	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) shares	May 02, 2017 shares
Summary of Significant Accounting Policies [Line Items]
Number of branches | branches	23
Reportable operating segments | segment	1
Shareholder subscription rights and community offering, price per share | $ / shares		$ 21.50
Potential Securities that May be Issued During Registration Statement Period, Value		$ 40,000
Shares issued in shareholder subscription rights and community offering | shares		930,232
Gross proceeds from shareholder subscription rights and community offering		$ 20,000
Net proceeds from shareholder subscription rights offering and community offering, net		$ 19,700
Tax benefit from stock compensation				$ 789
Cumulative effect adjustment	$ 0
Other Comprehensive Income (Loss), Net of Tax	$ 629		$ 1,875
Common stock, shares authorized | shares	20,000,000			20,000,000
Equity investments
Summary of Significant Accounting Policies [Line Items]
Other Comprehensive Income (Loss), Net of Tax	$ 77
Retained Earnings
Summary of Significant Accounting Policies [Line Items]
Cumulative effect adjustment	13
Subsequent Event
Summary of Significant Accounting Policies [Line Items]
Common stock, shares authorized | shares					40,000,000
Accounting Standards Update 2016-09 | Retained Earnings
Summary of Significant Accounting Policies [Line Items]
Cumulative effect adjustment	13
Income Tax Expense | Accounting Standards Update 2016-09
Summary of Significant Accounting Policies [Line Items]
Q1 Income Tax benefit for Stock Compensation in Income Statement	$ 667