Note 4 - Loans - Secured Loans Scheduled Maturities (Detail) $ in Thousands		Sep. 30, 2016 USD ($) Loan	Dec. 31, 2015 USD ($) Loan	Sep. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Secured Loans Scheduled Maturities [Abstract]
2016 | Loan	[1]	2
2017 | Loan		21
2018 | Loan		9
2019 | Loan		13
2020 | Loan		6
2021 | Loan		3
Thereafter | Loan		1
Total future maturities | Loan		55
Matured as of September 30, 2016 | Loan		2
Total secured loan balance | Loan		57	53
2016 (in Dollars) | $	[1]	$ 283
2017 (in Dollars) | $		25,815
2018 (in Dollars) | $		18,693
2019 (in Dollars) | $		33,147
2020 (in Dollars) | $		3,192
2021 (in Dollars) | $		1,148
Thereafter | $		871
Total future maturities | $		83,149
Matured as of September 30, 2016 | $		236
Total secured loan balance | $		$ 83,385	$ 62,740	$ 46,721	$ 71,017
2016	[1]	1.00%
2017		31.00%
2018		22.00%
2019		39.00%
2020		4.00%
2021		1.00%
Thereafter		1.00%
Total future maturities		99.00%
Matured as of September 30, 2016		1.00%
Total secured loan balance		100.00%

[1] Loans maturing in 2016 from October 1 to December 31.