Stock-Based Compensation (Stock Options) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Shares Under Option
Exercised (in shares)			(20,000)
Aggregate Intrinsic Value
Proceeds from stock options exercised	$ 0	$ 0	$ 371,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Shares Under Option
Outstanding at beginning of period (in shares)	121,500.0	229,000	328,000
Exercised (in shares)	0		(20,000)
Forfeited/Expired (in shares)	(31,500)	(107,500)	(79,000)
Outstanding at end of period (in shares)	90,000	121,500.0	229,000
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 31.75	$ 31.75	$ 30.67
Exercised (in dollars per share)			16.96
Forfeited/Expired (in dollars per share)	31.75	31.75	31.00
Outstanding at end of period (in dollars per share)	$ 31.75	$ 31.75	$ 31.75
Aggregate Intrinsic Value
Outstanding at beginning of period	$ 0	$ 0	$ 200,000
Outstanding at end of period	0	0	0
Recognized stock-based compensation expense	0	$ 100,000	200,000
Unrecognized stock-based compensation expense	0
Proceeds from stock options exercised	$ 0
Intrinsic value of options exercised			$ 100,000
Stock options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period (in years)	7 years