Merger and Acquisitions (Narrative) (Details)			3 Months Ended	9 Months Ended
	Mar. 01, 2015 USD ($) $ / shares shares	Feb. 27, 2015 USD ($) $ / shares	Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 15, 2015 USD ($)
Business Acquisition [Line Items]
Goodwill					$ 3,918,000	$ 3,918,000
Series C Preferred Stock [Member]
Business Acquisition [Line Items]
Preferred Stock, Shares Issued | shares	1,750
Preferred Stock, Liquidation Preference Per Share | $ / shares	$ 1,000
Phoenix Bancorp Inc. [Member]
Business Acquisition [Line Items]
Ratio of conversion of acquiree's shares to entity's shares	3.167
Per share price | $ / shares	$ 51.60	$ 15.60
Shares Of Acquirer Ratio Of Common Stock	0.414
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares	723,851
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 11,292,000
Payments to Acquire Businesses, Gross	2,949,000	$ 2,949,000
Business Combination, Consideration Transferred	$ 14,241,000
Preferred Stock, Shares Issued | shares	1,750
Goodwill	$ 2,902,000
Business Combination, Acquired Receivables, Fair Value	112,816,000
Pro Forma Earnings			$ 1,251,000	$ 4,403,000
Phoenix Bancorp Inc. [Member] | Acquisition-related Costs [Member]
Business Acquisition [Line Items]
Pro Forma Earnings			$ 0	$ 762,000
Phoenix Bancorp Inc. [Member] | Core Deposits [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 578,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 96,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	86,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	75,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	65,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	54,000
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	$ 114,000
Phoenix Bancorp Inc. [Member] | Series C Preferred Stock [Member]
Business Acquisition [Line Items]
Preferred Stock, Shares Issued | shares	1,750
Preferred Stock, Liquidation Preference Per Share | $ / shares	$ 1,000
Preferred Stock, Redemption Amount							$ 1,754,000