Note 2 - Securities (Details) - Investment Holdings (USD $) | 9 Months Ended | 12 Months Ended |
In Thousands, unless otherwise specified | Sep. 30, 2013 | Dec. 31, 2012 |
Mortgage-Backed Securities | ' | ' |
Available for sale securities, amortized cost | $5,804 | $11,486 |
Available for sale securities, gross unrealized gains | 425 | 653 |
Available for sale securities, estimated fair value | 6,229 | 12,139 |
Mortgage-Backed Securities | ' | ' |
Held to maturity securities, amortized cost | 50,513 | 67,454 |
Held to maturity securities, gross unrealized gains | 1,574 | 2,861 |
Held to maturity securities gross unrealized losses | -226 | ' |
Held to maturity securities, estimated fair value | 51,861 | 70,315 |
GNMA [Member] | Mortgage-Backed Securities [Member] | ' | ' |
Mortgage-Backed Securities | ' | ' |
Available for sale securities, amortized cost | 23 | 65 |
Available for sale securities, gross unrealized gains | ' | 3 |
Available for sale securities, estimated fair value | 23 | 68 |
Mortgage-Backed Securities | ' | ' |
Held to maturity securities, amortized cost | 3,190 | 4,174 |
Held to maturity securities, gross unrealized gains | 107 | 158 |
Held to maturity securities, estimated fair value | 3,297 | 4,332 |
FNMA [Member] | Mortgage-Backed Securities [Member] | ' | ' |
Mortgage-Backed Securities | ' | ' |
Available for sale securities, amortized cost | 2,288 | 3,379 |
Available for sale securities, gross unrealized gains | 162 | 276 |
Available for sale securities, estimated fair value | 2,450 | 3,655 |
Mortgage-Backed Securities | ' | ' |
Held to maturity securities, amortized cost | 19,376 | 27,979 |
Held to maturity securities, gross unrealized gains | 872 | 1,549 |
Held to maturity securities gross unrealized losses | -28 | ' |
Held to maturity securities, estimated fair value | 20,220 | 29,528 |
FNMA [Member] | Collateralized Mortgage Obligations [Member] | ' | ' |
Mortgage-Backed Securities | ' | ' |
Held to maturity securities, amortized cost | 9,295 | 11,648 |
Held to maturity securities, gross unrealized gains | 5 | 116 |
Held to maturity securities gross unrealized losses | -127 | ' |
Held to maturity securities, estimated fair value | 9,173 | 11,764 |
FHLMC [Member] | Mortgage-Backed Securities [Member] | ' | ' |
Mortgage-Backed Securities | ' | ' |
Available for sale securities, amortized cost | 1,323 | 1,889 |
Available for sale securities, gross unrealized gains | 89 | 143 |
Available for sale securities, estimated fair value | 1,412 | 2,032 |
Mortgage-Backed Securities | ' | ' |
Held to maturity securities, amortized cost | 7,172 | 10,212 |
Held to maturity securities, gross unrealized gains | 558 | 825 |
Held to maturity securities, estimated fair value | 7,730 | 11,037 |
FHLMC [Member] | Collateralized Mortgage Obligations [Member] | ' | ' |
Mortgage-Backed Securities | ' | ' |
Held to maturity securities, amortized cost | 11,480 | 13,441 |
Held to maturity securities, gross unrealized gains | 32 | 213 |
Held to maturity securities gross unrealized losses | -71 | ' |
Held to maturity securities, estimated fair value | 11,441 | 13,654 |
US Government Agencies Debt Securities [Member] | ' | ' |
Mortgage-Backed Securities | ' | ' |
Available for sale securities, amortized cost | 1,987 | 5,970 |
Available for sale securities, gross unrealized gains | 56 | 156 |
Available for sale securities, estimated fair value | 2,043 | 6,126 |
Equity Securities [Member] | ' | ' |
Mortgage-Backed Securities | ' | ' |
Available for sale securities, amortized cost | 183 | 183 |
Available for sale securities, gross unrealized gains | 118 | 75 |
Available for sale securities, estimated fair value | 301 | 258 |
Mortgage-Backed Securities [Member] | ' | ' |
Mortgage-Backed Securities | ' | ' |
Available for sale securities, amortized cost | 3,634 | 5,333 |
Available for sale securities, gross unrealized gains | 251 | 422 |
Available for sale securities, estimated fair value | 3,885 | 5,755 |
Mortgage-Backed Securities | ' | ' |
Held to maturity securities, amortized cost | 29,738 | 42,365 |
Held to maturity securities, gross unrealized gains | 1,537 | 2,532 |
Held to maturity securities gross unrealized losses | -28 | ' |
Held to maturity securities, estimated fair value | 31,247 | 44,897 |
Collateralized Mortgage Obligations [Member] | ' | ' |
Mortgage-Backed Securities | ' | ' |
Held to maturity securities, amortized cost | 20,775 | 25,089 |
Held to maturity securities, gross unrealized gains | 37 | 329 |
Held to maturity securities gross unrealized losses | -198 | ' |
Held to maturity securities, estimated fair value | $20,614 | $25,418 |