Note 13 - Earnings Per Share (Details) - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Weighted average basic shares outstanding (in shares)	11,192	11,120	11,065
Assumed exercise of stock options and issuance of stock awards (in shares)			9
Weighted average diluted shares outstanding (in shares)	11,192	11,120	11,074
Net income (loss)	$ (26,777,000)	$ (19,064,000)	$ 7,647,000
Basic earnings (loss) per share (in dollars per share)	$ (2.39)	$ (1.71)	$ 0.69
Diluted earnings (loss) per share (in dollars per share)	$ (2.39)	$ (1.71)	$ 0.69
Anti-dilutive securities outstanding (in shares)	125	118	201