Consolidated Statements of Financial Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Allowance for loan losses (in dollars)	$ 8,465	$ 10,146
Treasury stock, shares	103,991	103,991
Common Stock | Voting common stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	21,509,179	19,630,473
Common stock, shares outstanding	21,405,188	19,526,482
Common Stock | Non-voting common stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	25,000,000	5,000,000
Common stock, shares issued	7,671,520	698,200
Common stock, shares outstanding	7,671,520	698,200