Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended						12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012 BCB Community Bank [Member]	Dec. 31, 2013 State and Local Jurisdiction [Member]	Dec. 31, 2012 State and Local Jurisdiction [Member]	Dec. 31, 2012 State and Local Jurisdiction [Member] BCB Community Bank [Member]	Dec. 31, 2011 Allegiance Community Bank [Member] Internal Revenue Service (IRS) [Member]	Dec. 31, 2013 Allegiance Community Bank [Member] Internal Revenue Service (IRS) [Member]	Dec. 31, 2012 Allegiance Community Bank [Member] Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Deferred income tax assets: Net operating loss	$ 438	$ 1,128		$ 85	$ 59	$ 724		$ 353	$ 345
Operating Loss Carryforwards				1,457	1,000	10,900	1,200		1,009
Operating Loss Carryforwards, Valuation Allowance				85	59
Operating Loss Carryforwards, Expiration Date			Dec. 31, 2032				Dec. 31, 2030
Operating Loss Carryforwards, Limitations on Use							in accordance with Internal Revenue Code Section 382, usage of the carry forward is limited to $235,000 annually on a cumulative basis (portions of the $235,000 not used in a particular year may be added to subsequent usage).
Gain (Loss) on bulk sale of impaired loans held in portfolio	$ (474)	$ (10,804)