Stock-Based Compensation Restricted Stock Activity (Details) (2007 Incentive Stock Plan, Restricted Stock)	3 Months Ended
	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding (in shares) [Roll Forward]
Balance at beginning of period	1,401,248
Granted	52,714
Forfeited	(7,446)
Reduced for income tax obligations	(39,143)
Balance at end of period	1,407,373
Vested (in shares)	1,273,874
Non-vested (in shares)	133,499
Directors
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding (in shares) [Roll Forward]
Balance at beginning of period	785,000
Granted	40,275
Forfeited	0
Reduced for income tax obligations	0
Balance at end of period	825,275
Vested (in shares)	785,000
Non-vested (in shares)	40,275
Employees and Service Providers
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding (in shares) [Roll Forward]
Balance at beginning of period	616,248
Granted	12,439
Forfeited	(7,446)
Reduced for income tax obligations	(39,143)
Balance at end of period	582,098
Vested (in shares)	488,874
Non-vested (in shares)	93,224