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]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2011	$ 11,250	$ 110,056	$ 4,715	$ 32,695	$ (17,354)	$ (5,446)	$ 135,916
Net income				17,507			17,507
Other comprehensive income (loss), net of taxes						10,509	10,509
Dividends on series B preferred stock				(253)			(253)
Cash dividends declared on common stock				(3,188)			(3,188)
Issuance cost of common stock				(8)			(8)
Exercise of stock options			19		122		141
Stock-based compensation expense			67				67
Balance as of December 31, 2014 at Dec. 31, 2012	11,250	110,056	4,801	46,753	(17,232)	5,063	160,691
Net income				19,925			19,925
Other comprehensive income (loss), net of taxes						(7,607)	(7,607)
Dividends on series B preferred stock				(169)			(169)
Cash dividends declared on common stock				(4,581)			(4,581)
Dividend on restricted stock declared				(1)			(1)
Issuance cost of common stock				(13)			(13)
Issuance of restricted stock award (18,829 shares)			91		152		243
Exercise of stock options			19		2		21
Stock-based compensation expense			75				75
Balance as of December 31, 2014 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 taxes						1,530	1,530
Dividends on series B preferred stock				(112)			(112)
Cash dividends declared on common stock				(7,962)			(7,962)
Issuance cost of common stock				(7)			(7)
Exercise of stock options			806		361		1,167
Stock-based compensation expense			223				223
Stock issued in acquisition of legacy ConnectOne Bancorp, Inc. (13,221,152 shares)		264,231					264,231
Balance as of December 31, 2014 at Dec. 31, 2014	$ 11,250	$ 374,287	$ 6,015	$ 72,398	$ (16,717)	$ (1,014)	$ 446,219