Consolidated Statement of Financial Condition (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Held-to-maturity Securities, Fair Value	$ 95,346	$ 97,981
Preferred Stock, Par or Stated Value Per Share	$ 0	$ 0
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	25,000,000	25,000,000
Common Stock, Shares, Issued	7,067,425	6,269,004
Common Stock, Shares, Outstanding	7,067,425	6,269,004
Series A Preferred Stock [Member]
Preferred Stock, Shares Authorized	30,000,000	30,000,000
Preferred stock, Liquidation Preference per Share	$ 1,000	$ 1,000
Preferred Stock, Shares Issued	0	20,000,000
Preferred Stock, Shares Outstanding	0	20,000
Preferred Stock, Dividend Rate, Percentage	9.00%	9.00%