Accounting for Equity-Based Compensation (Details Textual) (USD $) In Thousands, except Per Share data, unless otherwise specified	1 Months Ended			3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2012	Jan. 31, 2010	Jan. 31, 2009	Jun. 30, 2012 Plan	Jun. 30, 2011	Jun. 30, 2012 Plan	Jun. 30, 2011	Dec. 31, 2009
Accounting for Equity-Based Compensation (Additional Textual) [Abstract]
Estimated fair value of employee stock options and stock appreciation rights granted				$ 3.12	$ 3.33
Expected life for options and SARs granted				5 years 4 months 17 days	3 years 11 months 23 days
Number of equity incentive plans				3		3
Number of employee stock purchase plan				1		1
Common stock available for grant under the Company's employee stock purchase plan				806,000		806,000
Common stock available for grant under the Company's equity incentive plans				874,759		874,759
Aggregate intrinsic value on the share price of the Company's common stock				$ 6.34		$ 6.34
SAR grants made	50.00%	66.67%	50.00%					75.00%
Exercisable amount equals to a maximum of Company's common stock exercisable				5,464		5,464
Additional information about stock options and SAR units outstanding and exercisable				$ 6.34		$ 6.34
Aggregate compensation expense				$ 1,458	$ 1,873	$ 2,944	$ 3,712
Total unrecognized compensation expense related to unvested equity-based compensation awards				$ 4,737		$ 4,737
SAR [Member]
Accounting for Equity-Based Compensation (Textual) [Abstract]
Common stock outstanding on SAR grants				7,649		7,649