Business Combinations (Details) - Schedule of business combinations - USD ($)		Jun. 30, 2015	Jul. 01, 2014
Business Acquisition [Line Items]
Cash and cash equivalents		$ 70,318,000
Investment securities		28,452,000
Restricted stock		13,646,000
Loans held for sale		190,000
Loans		1,299,284,000
Bank owned life insurance		15,481,000
Premises and equipment		6,475,000
Accrued interest receivable		4,470,000
Core deposit and other intangibles		5,308,000
Other real estate owned		2,455,000
Other assets		14,286,000
Deposits		(1,051,342,000)
FHLB borrowings		(263,370,000)
Other liabilities		(10,527,000)
Total identifiable net assets		135,126,000
Goodwill recorded in the Merger		129,105,000	$ 129,105,000
Fair Value Adjustments [Member]
Business Acquisition [Line Items]
Investment securities	[1]	16,000
Loans	[2]	(5,316,000)
Premises and equipment	[3]	(905,000)
Core deposit and other intangibles	[4]	5,308,000
Other assets	[5]	3,650,000
Deposits	[6]	(1,676,000)
FHLB borrowings	[7]	(1,324,000)
Total identifiable net assets		(247,000)
Legacy ConnectOne [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		70,318,000
Investment securities		28,436,000
Restricted stock		13,646,000
Loans held for sale		190,000
Loans		1,304,600,000
Bank owned life insurance		15,481,000
Premises and equipment		7,380,000
Accrued interest receivable		4,470,000
Other real estate owned		2,455,000
Other assets		10,636,000
Deposits		(1,049,666,000)
FHLB borrowings		(262,046,000)
Other liabilities		(10,527,000)
Total identifiable net assets		$ 135,373,000

[1] Represents the fair value adjustment on investment securities held to maturity.

[2] Represents the elimination of Legacy ConnectOne's allowance for loan and lease losses, deferred fees, deferred costs and an adjustment of the amortized cost of loans to estimated fair value, which includes an interest rate mark and credit mark.

[3] Represent an adjustment to reflect the fair value of above-market rent on leased premises. The above-market rent adjustment will be amortized on a straight-line basis over the remaining term of the respective leases.

[4] Represents intangible assets recorded to reflect the fair value of core deposits. The core deposit asset was recorded as an identifiable intangible asset and will be amortized on an accelerated basis over the estimated average life of the deposit base.

[5] Consist primarily of adjustments in net deferred tax assets resulting from the fair value adjustments related to acquired assets, liabilities assumed and identifiable intangibles recorded.

[6] Represents fair value adjustment on time deposits as the weighted average interest rates of time deposits assumed exceeded the costs of similar funding available in the market at the time of the Merger, as well as the elimination of fees paid on brokered time deposits.

[7] Represents the fair value adjustment on FHLB borrowings as the weighted average interest rate of FHLB borrowings assumed exceeded the cost of similar funding available in the market at the time of the Merger.