Note 1 - Summary of Significant Accounting Policies (Details) - Calculation of Earnings Per Share (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator:
Net income (loss) (in Dollars)	$ 3,339	[1]	$ 1,973	[1]	$ 1,891	[1]	$ (1,959)	[1]	$ 1,452	[1]	$ 1,002	[1]	$ 4,251	[1]	$ (640)	[1],[2]	$ 5,244	$ 6,065	$ (14,267)
Denominator:
Denominator for basic income (loss) per share – weighted-average shares																	14,837	14,742	14,689
Effect of dilutive securities:
Equivalent shares issuable upon conversion of unvested restricted stock																	202	66
Equivalent shares issuable upon conversion of unvested employee stock options																	0	0	0
Denominator for diluted income (loss) per share adjusted weighted-average shares and assumed conversions																	15,039	14,808	14,689
Net income (loss) per share:
Basic income (loss) per share (in Dollars per share)																	$ 0.35	$ 0.41	$ (0.97)
Diluted income (loss) per share (in Dollars per share)																	$ 0.35	$ 0.41	$ (0.97)

[1] Quarter totals do not aggregate to annual results due to rounding.

[2] Includes $2.4 million gain on the sale of a terminal property.