CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Dec. 31, 2013	$ 11,250	$ 110,056	$ 4,986	$ 61,914	$ (17,078)	$ (2,544)	$ 168,584
Net income				18,565			18,565
Other comprehensive income (loss), net of tax						1,530	1,530
Dividends on series B preferred stock				(112)			(112)
Issuance cost of common stock				(7)			(7)
Cash dividends declared on common stock				(7,962)			(7,962)
Exercise of stock options			806		361		1,167
Stock issued (13,221,152 shares) and options acquired (783,732 shares) in acquisition of Legacy ConnectOne		264,231					264,231
Stock-based compensation expense			223				223
Balance at Dec. 31, 2014	$ 11,250	$ 374,287	6,015	72,398	(16,717)	(1,014)	446,219
Net income				20,901			20,901
Other comprehensive income (loss), net of tax						$ (716)	(716)
Dividends on series B preferred stock				(56)			(56)
Cash dividends declared on common stock				$ (4,471)			(4,471)
Exercise of stock options			1,379				1,379
Restricted stock and performance units grants (162,491 shares)
Stock-based compensation expense			726				726
Balance at Jun. 30, 2015	$ 11,250	$ 374,287	$ 8,120	$ 88,772	$ (16,717)	$ (1,730)	$ 463,982