Share-Based Compensation (Details) (1998 Stock Option Plan [Member], Stock Options [Member], USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
1998 Stock Option Plan [Member] | Stock Options [Member]
Shares [Abstract]
Options outstanding, January 1, 2012 (in shares)	165,710
Options outstanding, Granted (in shares)	0
Options outstanding, Exercised (in shares)	0
Options outstanding, Canceled or expired (in shares)	(3,750)
Options outstanding, June 30, 2012 (in shares)	161,960
Options exercisable, June 30, 2012 (in shares)	143,093
Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, Option outstanding, Beginning Balance (in dollars per share)	$ 21.64
Weighted Average Exercise Price, Granted (in dollars per share)	$ 0
Weighted Average Exercise Price, Exercised (in dollars per share)	$ 0
Weighted Average Exercise Price, Canceled or expired (in dollars per share)	$ 21.94
Weighted Average Exercise Price, Option outstanding, Ending Balance (in dollars per share)	$ 21.63
Weighted Average Exercise Price, Options exercisable (in dollars per share)	$ 21.84
Weighted Average Remaining Contractual Life [Abstract]
Weighted Average Remaining Contractual Life, Options outstanding (in years)	3 years 11 months 16 days
Weighted Average Remaining Contractual Life, Options exercisable (in years)	3 years 9 months 14 days
Aggregate Intrinsic Value [Abstract]
Aggregate Intrinsic Value, Options outstanding, June 30, 2012	$ 0
Aggregate Intrinsic Value, Options exercisable, June 30, 2012	0
Unrecognized compensation cost related to nonvested options	$ 29
Period for recognition of unrecognized compensation cost related to nonvested options (in months)	4 months