Stock Plans (Restricted Stock Award Grant) (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted	195,999
RSUs and restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted	332,385
2014 Plan [Member] | RSUs and restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted	332,385	228,873	221,070
Director [Member] | 2014 Plan [Member] | Restricted stock shares granted to the Board
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted	32,235	16,601	17,102
Management [Member] | 2014 Plan [Member] | RSUs and restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted	300,150	212,272	203,968