Note 15 - Fair Values - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Reported Value Measurement [Member]
Cash and cash equivalents	$ 66,040	$ 51,192
Total	157,906	159,030
Total	35,415	35,899
Net loans	743,304	706,329
Federal Home Loan Bank of San Francisco stock	4,465	4,465
Deposits	937,556	803,735
Term debt	19,376	94,694
Junior subordinated debenture	10,310	10,310
Derivatives		2,369
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	66,040	51,192
Total	157,906	159,030
Total	37,128	36,645
Net loans	748,075	711,528
Federal Home Loan Bank of San Francisco stock	4,465	4,465
Deposits	939,329	804,490
Term debt	19,376	94,694
Junior subordinated debenture	5,648	5,402
Derivatives		2,369
Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	66,040	51,192
Total
Total
Net loans
Federal Home Loan Bank of San Francisco stock	4,465	4,465
Deposits
Term debt
Junior subordinated debenture
Derivatives
Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents
Total	157,906	159,030
Total	37,128	36,645
Net loans
Federal Home Loan Bank of San Francisco stock
Deposits	939,329	804,490
Term debt	19,376	94,694
Junior subordinated debenture	5,648	5,402
Derivatives		2,369
Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents
Total
Total
Net loans	748,075	711,528
Federal Home Loan Bank of San Francisco stock
Deposits
Term debt
Junior subordinated debenture
Derivatives
Total	157,906	$ 159,030
Total	$ 37,128