Note 5 - Loans Receivable (Details) - Loans Receivable (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Real estate:
Loans receivable	$ 1,055,117	$ 383,938
Commercial	139,871	29,033
Consumer	33,809	4,368
Unearned discounts and net deferred loan costs	(235)	(78)
Allowance for loan and lease losses	(13,660)	(12,711)	(15,676)
Loans receivable—net	1,041,222	371,149
One-to-Four-Family Residential [Member]
Real estate:
Loans receivable	320,489	129,308
Multifamily Residential [Member]
Real estate:
Loans receivable	45,181	25,773
Nonfarm Nonresidential [Member]
Real estate:
Loans receivable	369,974	168,902
Farmland [Member]
Real estate:
Loans receivable	47,199	2,663
Construction and Land Development [Member]
Real estate:
Loans receivable	$ 98,594	$ 23,891

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of consumer loans, including, but not limited to, mortgage, home equity, vehicles, credit card, installment, and lease financing. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Amount before allowance of loans issued to commercial and industrial institutions. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes real estate loans and loans covered under loss sharing agreements.

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