Note 9 - Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Month Period Ended						Six Month Period Ended
	June 30,  2013			July 1,  2012			June 30,  2013			July 1,  2012
Net Loss from continuing operations attributable to Ultralife	$	(1,953	)	$	(3,216	)	$	(1,783	)	$	(4,647	)
Net Loss from continuing operations attributable to participating securities (unvested restricted stock awards) (-0-, -0-, -0- and -0- shares, respectively)		-			-			-			-
Net Loss from continuing operations attributable to Ultralife common shareholders (a)		(1,953	)		(3,216	)		(1,783	)		(4,647	)
Effect of Dilutive Securities		-			-			-			-
Net Loss from continuing operations attributable to Ultralife common shareholders - Adjusted (b)	$	(1,953	)	$	(3,216	)	$	(1,783	)	$	(4,647	)
Net Income (Loss) from discontinued operations attributable to Ultralife common shareholders (c)	$	(120	)	$	49		$	144		$	(22	)
Effect of Dilutive Securities		-			-			-			-
Net Income (Loss) from discontinued operations attributable to Ultralife common shareholders - Adjusted (d)	$	(120	)	$	49		$	144		$	(22	)
Average Common Shares Outstanding – Basic (e)		17,459,000			17,396,000			17,458,000			17,376,000
Effect of Dilutive Securities: Stock Options / Warrants		-			-			-			-
Average Common Shares Outstanding – Diluted (f)		17,459,000			17,396,000			17,458,000			17,376,000
EPS – Basic (a/e) - continuing operations	$	(0.11	)	$	(0.18	)	$	(0.10	)	$	(0.27	)
EPS – Basic (c/e) - discontinued operations	$	(0.01	)	$	0.00		$	0.01		$	(0.00	)
EPS – Diluted (b/f) - continuing operations	$	(0.11	)	$	(0.18	)	$	(0.10	)	$	(0.27	)
EPS – Diluted (d/f) - discontinued operations	$	(0.01	)	$	0.00		$	0.01		$	(0.00	)