CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 380us-gaap_NetIncomeLoss	$ 473us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and accretion	223	144
Provision for credit losses	150us-gaap_ProvisionForLoanAndLeaseLosses	38us-gaap_ProvisionForLoanAndLeaseLosses
Gains on disposals of assets, net	(199)us-gaap_GainLossOnSaleOfOtherAssets	(1)us-gaap_GainLossOnSaleOfOtherAssets
Income on investment in life insurance	(55)	(55)
Changes in assets and liabilities:
Decrease in other assets	116	116
Decrease in other liabilities	(556)	(342)
Net cash provided by operating activities	59	373
Cash flows from investing activities:
Maturities and proceeds of available for sale mortgage-backed securities	2,879	1,820
Proceeds from maturities and sales of other investment securities	6,368	2,263
Purchases of investment securities	(18,211)	(1,244)
Sale of Federal Home Loan Bank stock	125	125
Proceeds from sales of other real estate		230
Decrease (increase) in loans, net	5,603	(7,902)
Purchases of premises and equipment	(120)	(124)
Net cash used by investing activities	(3,356)	(4,832)
Cash flows from financing activities:
Increase in deposits, net	7,694us-gaap_IncreaseDecreaseInDeposits	13,120us-gaap_IncreaseDecreaseInDeposits
Dividends paid	(275)us-gaap_PaymentsOfDividendsCommonStock	(275)us-gaap_PaymentsOfDividendsCommonStock
Common stock dividends reinvested	39glbz_ShareholderDividendReinvestment	40glbz_ShareholderDividendReinvestment
Net cash provided by financing activities	7,458	12,885
Increase in cash and cash equivalents	4,161	8,426
Cash and cash equivalents, beginning of year	13,280	10,953
Cash and cash equivalents, end of period	$ 17,441	$ 19,379

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