CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and due from banks	$ 37,150	$ 31,291
Interest-bearing deposits with banks	163,249	169,604
Cash and due from banks	200,399	200,895
Investment securities:
Securities available-for-sale	353,290	195,770
Securities held-to-maturity (fair value of $ - and $231,445)		224,056
Loans held-for-sale	78,005
Loans receivable	3,475,832	3,099,007
Less: Allowance for loan and lease losses	25,744	26,572
Net loans receivable	3,450,088	3,072,435
Investment in restricted stock, at cost	24,310	32,612
Bank premises and equipment, net	22,075	22,333
Accrued interest receivable	12,965	12,545
Bank owned life insurance	98,359	78,801
Other real estate owned	626	2,549
Goodwill	145,909	145,909
Core deposit intangibles	3,088	3,908
Other assets	37,234	24,096
Total assets	4,426,348	4,015,909
Deposits:
Noninterest-bearing	694,977	650,775
Interest-bearing	2,649,294	2,140,191
Total deposits	3,344,271	2,790,966
Borrowings	476,280	671,587
Subordinated debentures	54,534	54,343
Accounts payable and accrued liabilities	20,231	21,669
Total liabilities	3,895,316	3,538,565
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Preferred Stock, $1,000 liquidation value per share: Authorized 5,000,000 shares; issued and outstanding 11,250 shares of Series B preferred stock at December 31, 2015; total liquidation value of $11,250 at December 31, 2015		11,250
Common stock, no par value: Authorized 50,000,000 shares; issued 34,018,731 shares at December 31, 2016 and 32,149,585 shares at December 31, 2015; outstanding 31,948,307 shares at December 31, 2016 and 30,082,065 at December 31, 2015	412,726	374,287
Additional paid-in capital	11,407	8,527
Retained earnings	126,462	104,606
Treasury stock, at cost (2,063,922 shares at December 31, 2016 and December 31, 2015)	(16,717)	(16,717)
Accumulated other comprehensive loss	(2,846)	(4,609)
Total stockholders' equity	531,032	477,344
Total liabilities and stockholders' equity	$ 4,426,348	$ 4,015,909

No definition available.

Name:	cnob_InvestmentSecuritiesAbstract
Namespace Prefix:	cnob_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.