Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended			6 Months Ended		12 Months Ended				3 Months Ended		6 Months Ended
	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Mar. 23, 2011	Mar. 15, 2011	Feb. 21, 2008	Jun. 30, 2011 Restricted Stock Units (RSUs) [Member]	Jun. 30, 2010 Restricted Stock Units (RSUs) [Member]	Jun. 30, 2011 Restricted Stock Units (RSUs) [Member]	Jun. 30, 2010 Restricted Stock Units (RSUs) [Member]	Feb. 21, 2011 Restricted Stock Units (RSUs) [Member]	Feb. 21, 2010 Restricted Stock Units (RSUs) [Member]
Maximum period of common stock granted, years	10			10
Annual increments to be vested	20.00%			20.00%
Options granted				0		0
Option compensation expense	$ 196,000		$ 696,000	$ 562,000	$ 1,800,000					$ 213,000	$ 82,000	$ 309,000	$ 163,000
Unrecognized stock-based compensation expense related to stock options	1,300,000			1,300,000						1,500,000		1,500,000
Unrecognized stock-based compensation expense related to stock options expected to be recognized period, years				1.7								1.7
Exercised, Shares	0	86,860				0
Cash received totaled				1,300,000
Cash received aggregate intrinsic value total				172,000
Fair value of stock options vested	$ 35,000		$ 35,000	$ 35,000	$ 35,000
Shares available under incentive plan	2,266,436			2,266,436
Restricted stock units granted to eligible employees		65,243					50,174	15,069	82,291
Common stock, shares issued	82,845,764			82,845,764		82,739,348								12,633	15,006
Common stock, par value	$ 0.01			$ 0.01		$ 0.01	$ 16.15	$ 16.14						$ 18.79	$ 9.64
Restricted stock units granted maximum term, years	5			5
Annual increments of restricted stock grants	20.00%			20.00%