Earnings (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings (Loss) Per Share [Abstract]
Options Excluded from calculation										707	984
Restricted Stock Units Excluded from Calculation										3	37
Net Income (Loss) Attributable to Parent	$ 1,494	$ (998)	$ (4,412)	$ (724)	$ 2,054	$ 252	$ 759	$ 393	$ (4,640)	$ 3,458	$ 43,865
Weighted Average Number of Shares Outstanding, Basic	32,882	33,237	33,240	33,092	32,951	32,897	32,567	32,523	33,124	32,783	32,226
Weighted Average Number Diluted Shares Outstanding Adjustment									0	605	627
Weighted Average Number of Shares Outstanding, Diluted	33,504	33,237	33,240	33,092	33,539	33,426	33,155	33,239	33,124	33,388	32,853
Earnings Per Share, Basic	$ 0.05	$ (0.03)	$ (0.13)	$ (0.02)	$ 0	$ 0	$ 0	$ 0	$ (0.14)	$ 0.11	$ 1.36
Earnings Per Share, Diluted	$ 0.04	$ (0.03)	$ (0.13)	$ (0.02)	$ 0	$ 0	$ 0	$ 0	$ (0.14)	$ 0.10	$ 1.34
Restricted Stock Units, outstanding	805								805
stock options, outstanding	615								615